Ester Info/Detection Times/Half Lives - UK-Muscle Body Building Community

**hackskii** · 12-09-2006, 11:27 PM

Grabbed this from another board but I thought it was interesting, so I took it

Ester Compositions and Properties

Acetate: Chemical Structure C2H4O2.

Also referred to as Acetic Acid; Ethylic acid; Vinegar acid; vinegar; Methanecarboxylic acid. Acetate esters delay the release of a steroid for only a couple of days. Contrary to what you may have read, acetate esters do not increase the tendency for fat removal. Again, there is no known mechanism for it to do so. This ester is used on oral primobolan tablets (metenolone acetate), Finaplix (trenbolone acetate) implant pellets, and occasionally testosterone.

Propionate: Chemical Structure C3H6O2.

Also referred to as Carboxyethane; hydroacrylic acid; Methylacetic acid; Ethylformic acid; Ethanecarboxylic acid; metacetonic acid; pseudoacetic acid; Propionic Acid. Propionate esters will slow the release of a steroid for several days. To keep blood levels from fluctuating greatly, propionate compounds are usually injected two to three times weekly. Testosterone propionate and methandriol dipropionate (two separate propionate esters attached to the parent steroid methandriol) are popular items.

Phenylpropionate: Chemical Structure C9H10O2.

Also referred to as Propionic Acid Phenyl Ester. Phenylpropionate will extend the release of active steroid a few days longer than propionate. To keep blood levels even, injections are given at least twice weekly. Durabolin is the drug most commonly seen with a phenylpropionate ester (nandrolone phenylpropionate), although it is also used with testosterone in Sustanon and Omnadren.

Isocarpoate: Chemical Structure C6H12O2.

Also referred to as Isocaproic Acid; isohexanoate; 4-methylvaleric acid. Isocaproate begins to near enanthate in terms of release. The duration is still shorter, with a notable hormone level being sustained for approximately one week. This ester is used with testosterone in the blended products Sustanon and Omnadren.

Caproate: Chemical Structure C6H12O2.

Also referred to as Hexanoic acid; hexanoate; n-Caproic Acid; n-Hexoic acid; butylacetic acid; pentiformic acid; pentylformic acid; n-hexylic acid; 1-pentanecarboxylic acid; hexoic acid; 1-hexanoic acid; Hexylic acid; Caproic acid. This ester is identical to isocarpoate in terms of atom count and weight, but is laid out slightly different (Isocaproate has a split configuration, difficult to explain here but easy to see on paper). Release duration would be very similar to isocaproate (levels sustained for approximately one weak), perhaps coming slightly closer to enanthate due to its straight chain. Caproate is the slowest releasing ester used in Omnadren, which is why most athletes notice more water retention with this compound.

Enanthate: Chemical Structure C7H14O2.

Also referred to as heptanoic acid; enanthic acid; enanthylic acid; heptylic acid; heptoic acid; Oenanthylic acid; Oenanthic acid. Enanthate is one of the most prominent esters used in steroid manufacture (most commonly seen with testosterone but is also used in other compounds like Primobolan Depot). Enanthate will release a steady (yet fluctuating as all esters are) level of hormone for approximately 10-14 days. Although in medicine enanthate compounds are often injected on a bi-weekly or monthly basis, athletes will inject at least weekly to help maintain a uniform blood level.

Cypionate: Chemical Structure C8H14O2.

Also referred to as Cyclopentylpropionic acid, cyclopentylpropionate. Cypionate is a very popular ester here in the U.S., although it is scarcely found outside this region. Its release duration is almost identical to enanthate (10-14 days), and the two are likewise thought to be interchangeable in U.S. medicine. Althletes commonly hold the belief than cypionate is more powerful than enanthate, although realistically there is little difference between the two. The enanthate ester is in fact slightly smaller than cypionate, and it therefore releases a small (perhaps a few milligrams) amount of steroid more in comparison.

Decanoate: Chemical Structure C10H20O2.

Also referred to as decanoic acid; capric acid; caprinic acid; decylic acid, Nonanecarboxylic acid. The Decanoate ester is most commonly used with the hormone nandrolone (as in Deca-Durabolin) and is found in virtually all corners of the world. Testosterone decanoate is also the longest acting constituent in Sustanon, greatly extending its release duration. The release time with Decanoate compounds is listed to be as long as one month, although most recently we are finding that levels seem to drop significantly after two weeks. To keep blood levels more uniform, athletes (as they have always known to do) will follow a weekly injection schedule.

Undecylenate: Chemical Structure C11H20O2.

Also referred to as Undecylenic acid; Hendecenoic acid; Undecenoic acid. This ester is very similar to decanoate, containing only one carbon atom more. Its release duration is likewise very similar (approximately 2-3 weeks), perhaps extending a day or so past that seen with decanoate. Undecylenate seems to be exclusive to the veterinary preparation Equipoise (boldenone undecylenate), although there is no reason it would not work well in human-use preparations (Equipoise certainly works fine for athletes). Again, weekly injections are most common.

Undecanoate: Chemical Structure C11H22O2.

Also referred to as Undecanoic Acid; 1-Decanecarboxylic acid; Hendecanoic acid; Undecylic acid. Undecanoate is not a commonly found ester, and only appears to be used in the nandrolone preparation Dynabolan, and oral testosterone undecanoate (Andriol). Since this ester is chemically very similar to undecylenate (it is only 2 hydrogen atoms larger), it has a similar release duration (approximately 2-3 weeks). Although this ester is used in the oral preparation Andriol, there is no reason to believe it carries any properties unique of other esters. Andriol in fact works very poorly at delivering testosterone, bolstering the idea that oral administration is not the idea use of esterified androgens.

Laurate: Chemical structure C12H24O2.

Also referred to as Dodecanoic acid, laurostearic acid, duodecyclic acid, 1-undecanecarboxylic acid, and dodecoic acid. Laurate is the longest releasing ester used in commercial steroid production, although longer acting esters do exist. Its release duration would be closer to one month than the other esters listed above, although realistically we are probably to expect a notable drop in hormone level after the third week. Laurate is exclusively found in the veterinary nandrolone preparation Laurabolin, perhaps seen as slightly advantageous over a decanoate ester due to a less frequent injection schedule. Again athletes will most commonly inject this drug weekly, no doubt in part due to its low strength (25mg/ml or 50mg/ml).

Half-Lives
Oral steroids Drug Active half-life
Anadrol / Anapolan50 (oxymetholone) 8 to 9 hours
Anavar (oxandrolone) 9 hours
Dianabol (methandrostenolone, methandienone) 4.5 to 6 hours
Methyltestosterone 4 days
Winstrol (stanozolol)
(tablets or depot taken orally) 9 hours

Depot steroids Drug Active half-life
Deca-durabolin (Nandrolone decanate) 15 days
Equipoise 14 days
Finaject (trenbolone acetate) 3 days
Primobolan (methenolone enanthate) 10.5 days
Sustanon or Omnadren 15 to 18 days
Testosterone Cypionate 12 days
Testosterone Enanthate 10.5 days
Testosterone Propionate 4.5 days
Testosterone Suspension 1 day
* Winstrol (stanozolol) 1 day

*Winstrol depot does not actually possess a classical half-life because it is un-esterified. Instead, the microcrystals dissolve slowly. Once they have all dissolved levels of the drug fall very rapidly. It is still an important consideration, and we have included it with a half-life of one day.

Steroid esters Drug Active half-life
Formate 1.5 days
Acetate 3 days
Propionate 4.5 days
Phenylpropionate 4.5 days
Butyrate 6 days
Valerate 7.5 days
Hexanoate 9 days
Caproate 9 days
Isocaproate 9 days
Heptanoate 10.5 days
Enanthate 10.5 days
Octanoate 12 days
Cypionate 12 days
Nonanoate 13.5 days
Decanoate 15 days
Undecanoate 16.5 days

Ancillaries Drug Active half-life
Arimidex 3 days
Clenbuterol 1.5 days
Clomid 5 days
Cytadren 6 hours
Ephedrine 6 hours
T3 10 hours

Detection Times
Anavar ....................................3 weeks
Anadrol.....................................2 months
Andriol......................................1 week
Boldenone Undecyclenate.............4-5 months
Clen.........................................4-5 Days
DBol ........................................5 weeks
Deca .......................................18 months
Ephedrin ...................................4-5 Days
Halo..........................................2 months
Methamphetamin ........................6-10 Days
Nandrolon Phenylprop ..................12 months
Nilevar......................................5-6 weeks
Parabolan..................................4-5 weeks
Proviron....................................5 weeks
Primo Depot...............................4-5 weeks
Sustanon ..................................3 months
Spiropent..................................4-5 days
Test cyp ..................................3 months
Test enat .................................3 months
Test Prop..................................2-3 weeks
Trenbolon Acet ..........................4-5 weeks
*Test supspenison No metabolites. t/e should be back to normal in days
Equipoise...................................4-5months
Winny oral..................................3 weeks
Winny inj....................................2 months

Baggio · 13-09-2006, 02:44 AM

good post mate, really interesting.

SA12 · 13-09-2006, 10:36 AM

Very useful! Nice one Hacks

LEWIS · 13-09-2006, 10:38 AM

great post will keep in my draw in work for ref.

LEWIS · 13-09-2006, 10:41 AM

have you considered writing a book? i nearly made a book out of your info i got a folder called 'hackskii safe guidelines'

LEWIS · 13-09-2006, 10:42 AM

**** deca is a sod for detection

**hackskii** · 13-09-2006, 03:26 PM

I actually found it searching for information on propionic acid.
Some dude swore that propionate's burn days following injections was due to propionic acid and the body dealing with it.
He told me that all prop will burn the next day and I told him viramone didnt.
He went on to say he suspects that viramone was an acetate.
After going round and round I think he was full of crap.
So I decided to look for myself on any information on propionic acid and injection site irritations.
This is the only article I found worth anything.
I think my friend is not correct, if you look at all the esters it looks like they are all acid.

**Nytol** · 14-09-2006, 11:21 AM

Quote:

Originally Posted by hackskii

After going round and round I think he was full of crap.
.

Yes he is def full of crap.

lloyd07 · 24-05-2007, 11:58 AM

hi , i just baught primo depot and believed thaught the detection time was 4-5 weeks but many sites say that its 5 months ...as i play semi pro sport this is a major worry for me . any 1 know the 100% certain urine detection time for it let me know , thanks

12-09-2006, 11:27 PM	#1 (permalink)
hackskii Super Moderator Join Date: Jul 2003 Location: Sunny Southern California U.S.A. Posts: 22,649	Ester Info/Detection Times/Half Lives Grabbed this from another board but I thought it was interesting, so I took it Ester Compositions and Properties Acetate: Chemical Structure C2H4O2. Also referred to as Acetic Acid; Ethylic acid; Vinegar acid; vinegar; Methanecarboxylic acid. Acetate esters delay the release of a steroid for only a couple of days. Contrary to what you may have read, acetate esters do not increase the tendency for fat removal. Again, there is no known mechanism for it to do so. This ester is used on oral primobolan tablets (metenolone acetate), Finaplix (trenbolone acetate) implant pellets, and occasionally testosterone. Propionate: Chemical Structure C3H6O2. Also referred to as Carboxyethane; hydroacrylic acid; Methylacetic acid; Ethylformic acid; Ethanecarboxylic acid; metacetonic acid; pseudoacetic acid; Propionic Acid. Propionate esters will slow the release of a steroid for several days. To keep blood levels from fluctuating greatly, propionate compounds are usually injected two to three times weekly. Testosterone propionate and methandriol dipropionate (two separate propionate esters attached to the parent steroid methandriol) are popular items. Phenylpropionate: Chemical Structure C9H10O2. Also referred to as Propionic Acid Phenyl Ester. Phenylpropionate will extend the release of active steroid a few days longer than propionate. To keep blood levels even, injections are given at least twice weekly. Durabolin is the drug most commonly seen with a phenylpropionate ester (nandrolone phenylpropionate), although it is also used with testosterone in Sustanon and Omnadren. Isocarpoate: Chemical Structure C6H12O2. Also referred to as Isocaproic Acid; isohexanoate; 4-methylvaleric acid. Isocaproate begins to near enanthate in terms of release. The duration is still shorter, with a notable hormone level being sustained for approximately one week. This ester is used with testosterone in the blended products Sustanon and Omnadren. Caproate: Chemical Structure C6H12O2. Also referred to as Hexanoic acid; hexanoate; n-Caproic Acid; n-Hexoic acid; butylacetic acid; pentiformic acid; pentylformic acid; n-hexylic acid; 1-pentanecarboxylic acid; hexoic acid; 1-hexanoic acid; Hexylic acid; Caproic acid. This ester is identical to isocarpoate in terms of atom count and weight, but is laid out slightly different (Isocaproate has a split configuration, difficult to explain here but easy to see on paper). Release duration would be very similar to isocaproate (levels sustained for approximately one weak), perhaps coming slightly closer to enanthate due to its straight chain. Caproate is the slowest releasing ester used in Omnadren, which is why most athletes notice more water retention with this compound. Enanthate: Chemical Structure C7H14O2. Also referred to as heptanoic acid; enanthic acid; enanthylic acid; heptylic acid; heptoic acid; Oenanthylic acid; Oenanthic acid. Enanthate is one of the most prominent esters used in steroid manufacture (most commonly seen with testosterone but is also used in other compounds like Primobolan Depot). Enanthate will release a steady (yet fluctuating as all esters are) level of hormone for approximately 10-14 days. Although in medicine enanthate compounds are often injected on a bi-weekly or monthly basis, athletes will inject at least weekly to help maintain a uniform blood level. Cypionate: Chemical Structure C8H14O2. Also referred to as Cyclopentylpropionic acid, cyclopentylpropionate. Cypionate is a very popular ester here in the U.S., although it is scarcely found outside this region. Its release duration is almost identical to enanthate (10-14 days), and the two are likewise thought to be interchangeable in U.S. medicine. Althletes commonly hold the belief than cypionate is more powerful than enanthate, although realistically there is little difference between the two. The enanthate ester is in fact slightly smaller than cypionate, and it therefore releases a small (perhaps a few milligrams) amount of steroid more in comparison. Decanoate: Chemical Structure C10H20O2. Also referred to as decanoic acid; capric acid; caprinic acid; decylic acid, Nonanecarboxylic acid. The Decanoate ester is most commonly used with the hormone nandrolone (as in Deca-Durabolin) and is found in virtually all corners of the world. Testosterone decanoate is also the longest acting constituent in Sustanon, greatly extending its release duration. The release time with Decanoate compounds is listed to be as long as one month, although most recently we are finding that levels seem to drop significantly after two weeks. To keep blood levels more uniform, athletes (as they have always known to do) will follow a weekly injection schedule. Undecylenate: Chemical Structure C11H20O2. Also referred to as Undecylenic acid; Hendecenoic acid; Undecenoic acid. This ester is very similar to decanoate, containing only one carbon atom more. Its release duration is likewise very similar (approximately 2-3 weeks), perhaps extending a day or so past that seen with decanoate. Undecylenate seems to be exclusive to the veterinary preparation Equipoise (boldenone undecylenate), although there is no reason it would not work well in human-use preparations (Equipoise certainly works fine for athletes). Again, weekly injections are most common. Undecanoate: Chemical Structure C11H22O2. Also referred to as Undecanoic Acid; 1-Decanecarboxylic acid; Hendecanoic acid; Undecylic acid. Undecanoate is not a commonly found ester, and only appears to be used in the nandrolone preparation Dynabolan, and oral testosterone undecanoate (Andriol). Since this ester is chemically very similar to undecylenate (it is only 2 hydrogen atoms larger), it has a similar release duration (approximately 2-3 weeks). Although this ester is used in the oral preparation Andriol, there is no reason to believe it carries any properties unique of other esters. Andriol in fact works very poorly at delivering testosterone, bolstering the idea that oral administration is not the idea use of esterified androgens. Laurate: Chemical structure C12H24O2. Also referred to as Dodecanoic acid, laurostearic acid, duodecyclic acid, 1-undecanecarboxylic acid, and dodecoic acid. Laurate is the longest releasing ester used in commercial steroid production, although longer acting esters do exist. Its release duration would be closer to one month than the other esters listed above, although realistically we are probably to expect a notable drop in hormone level after the third week. Laurate is exclusively found in the veterinary nandrolone preparation Laurabolin, perhaps seen as slightly advantageous over a decanoate ester due to a less frequent injection schedule. Again athletes will most commonly inject this drug weekly, no doubt in part due to its low strength (25mg/ml or 50mg/ml). Half-Lives Oral steroids Drug Active half-life Anadrol / Anapolan50 (oxymetholone) 8 to 9 hours Anavar (oxandrolone) 9 hours Dianabol (methandrostenolone, methandienone) 4.5 to 6 hours Methyltestosterone 4 days Winstrol (stanozolol) (tablets or depot taken orally) 9 hours Depot steroids Drug Active half-life Deca-durabolin (Nandrolone decanate) 15 days Equipoise 14 days Finaject (trenbolone acetate) 3 days Primobolan (methenolone enanthate) 10.5 days Sustanon or Omnadren 15 to 18 days Testosterone Cypionate 12 days Testosterone Enanthate 10.5 days Testosterone Propionate 4.5 days Testosterone Suspension 1 day * Winstrol (stanozolol) 1 day Winstrol depot does not actually possess a classical half-life because it is un-esterified. Instead, the microcrystals dissolve slowly. Once they have all dissolved levels of the drug fall very rapidly. It is still an important consideration, and we have included it with a half-life of one day. Steroid esters Drug Active half-life Formate 1.5 days Acetate 3 days Propionate 4.5 days Phenylpropionate 4.5 days Butyrate 6 days Valerate 7.5 days Hexanoate 9 days Caproate 9 days Isocaproate 9 days Heptanoate 10.5 days Enanthate 10.5 days Octanoate 12 days Cypionate 12 days Nonanoate 13.5 days Decanoate 15 days Undecanoate 16.5 days Ancillaries Drug Active half-life Arimidex 3 days Clenbuterol 1.5 days Clomid 5 days Cytadren 6 hours Ephedrine 6 hours T3 10 hours Detection Times Anavar ....................................3 weeks Anadrol.....................................2 months Andriol......................................1 week Boldenone Undecyclenate.............4-5 months Clen.........................................4-5 Days DBol ........................................5 weeks Deca .......................................18 months Ephedrin ...................................4-5 Days Halo..........................................2 months Methamphetamin ........................6-10 Days Nandrolon Phenylprop ..................12 months Nilevar......................................5-6 weeks Parabolan..................................4-5 weeks Proviron....................................5 weeks Primo Depot...............................4-5 weeks Sustanon ..................................3 months Spiropent..................................4-5 days Test cyp ..................................3 months Test enat .................................3 months Test Prop..................................2-3 weeks Trenbolon Acet ..........................4-5 weeks Test supspenison No metabolites. t/e should be back to normal in days Equipoise...................................4-5months Winny oral..................................3 weeks Winny inj....................................2 months __________________ "Life is not measured by the number of breaths we take, but by the moments that take our breath away." - George Carlin Scott To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

13-09-2006, 02:44 AM	#2 (permalink)
Baggio 21 years old Join Date: Jun 2006 Posts: 388	good post mate, really interesting. __________________ qualified personal trainer & sports massage therapist

13-09-2006, 10:36 AM	#3 (permalink)
SA12 Getting HUGE! Join Date: Jun 2004 Location: UK Posts: 1,363	Very useful! Nice one Hacks __________________ SA12

13-09-2006, 03:26 PM	#7 (permalink)
hackskii Super Moderator Join Date: Jul 2003 Location: Sunny Southern California U.S.A. Posts: 22,649	I actually found it searching for information on propionic acid. Some dude swore that propionate's burn days following injections was due to propionic acid and the body dealing with it. He told me that all prop will burn the next day and I told him viramone didnt. He went on to say he suspects that viramone was an acetate. After going round and round I think he was full of crap. So I decided to look for myself on any information on propionic acid and injection site irritations. This is the only article I found worth anything. I think my friend is not correct, if you look at all the esters it looks like they are all acid. __________________ "Life is not measured by the number of breaths we take, but by the moments that take our breath away." - George Carlin Scott To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts.

24-05-2007, 11:58 AM	#9 (permalink)
lloyd07 Newbie Trainer Join Date: May 2007 Posts: 1	Re: Ester Info/Detection Times/Half Lives hi , i just baught primo depot and believed thaught the detection time was 4-5 weeks but many sites say that its 5 months ...as i play semi pro sport this is a major worry for me . any 1 know the 100% certain urine detection time for it let me know , thanks

13-09-2006, 10:38 AM	#4 (permalink)
LEWIS Getting HUGE! Join Date: Oct 2005 Location: south wales Posts: 1,086	great post will keep in my draw in work for ref.

13-09-2006, 10:41 AM	#5 (permalink)
LEWIS Getting HUGE! Join Date: Oct 2005 Location: south wales Posts: 1,086	have you considered writing a book? i nearly made a book out of your info i got a folder called 'hackskii safe guidelines'

13-09-2006, 10:42 AM	#6 (permalink)
LEWIS Getting HUGE! Join Date: Oct 2005 Location: south wales Posts: 1,086	**** deca is a sod for detection

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