Trenbolone
Title: Trenbolone
CAS Registry Number: 10161-33-8
CAS Name: (17b)-17-Hydroxyestra-4,9,11-trien-3-one
Additional Names: 4,9,11-estratrien-17b-ol-3-one; 17b-hydroxy-19-norandrosta-4,9,11-trien-3-one; 19-norandrosta-4,9,11-trien-17b-ol-3-one; trienbolone; trienolone
Molecular Formula: C18H22O2
Molecular Weight: 270.37
Percent Composition: C 79.96%, H 8.20%, O 11.84%
Literature References: Prepn of base: Velluz et al., C.R. Hebd. Seances Acad. Sci. 257, 569 (1963); Heller et al., Steroids 10, 211 (1967). Base and 17-acetate: FR M1958 and GB 1035683 (1963 and 1966 to Roussel-UCLAF), C.A. 60, 3039h (1964); 65, 17027c (1966). 17-Cyclohexylmethylcarbonate: Nedelec, Costerousse, FR M5979 (1968 to Roussel-UCLAF), C.A. 71, 50356g (1969). Pharmacology of the acetate: Krüskemper et al., Arzneim.-Forsch. 17, 449 (1967). Animal studies: Beranger, Malterre, C.R. Seances Soc. Biol. Ses Fil. 162, 1157 (1968); Best, Vet. Rec. 91, 624 (1972). Environmental degradation study: B. Schiffer et al., Environ. Health Perspect. 109, 1145 (2001).
Properties: Crystals, mp 186°. [a]D20 +19° (c = 0.45 in ethanol). Also reported as mp 183-186° from acetone-water. uv max: 239, 340.5 nm (e 5260, 28000) (Heller).
Melting point: mp 186°; mp 183-186° from acetone-water
Optical Rotation: [a]D20 +19° (c = 0.45 in ethanol)
Absorption maximum: uv max: 239, 340.5 nm (e 5260, 28000) (Heller)
 
Derivative Type: Acetate
CAS Registry Number: 10161-34-9
CAS Name: (17b)-17-Acetyloxyestra-4,9,11-trien-3-one
Additional Names: 17b-acetoxy-3-oxoestra-4,9,11-triene; 17b-acetoxyestra-4,9,11-trien-3-one
Trademarks: Finaplix (Intervet); Parabolan
Molecular Formula: C20H24O3
Molecular Weight: 312.40
Percent Composition: C 76.89%, H 7.74%, O 15.36%
Properties: Crystals, mp 96-97°. [a]D20 +36.8° (c = 0.37 in methanol).
Melting point: mp 96-97°
Optical Rotation: [a]D20 +36.8° (c = 0.37 in methanol)
 
Derivative Type: Cyclohexylmethylcarbonate
CAS Registry Number: 23454-33-3
CAS Name: (17b)-17-[(cyclohexylmethoxy)carbonyl]oxyestra-4,9,11-trien-3-one
Additional Names: trenbolone hexahydrobenzylcarbonate
Molecular Formula: C26H34O4
Molecular Weight: 410.55
Percent Composition: C 76.06%, H 8.35%, O 15.59%
Properties: Crystals from cyclohexane-petr ether, mp 90-95°. [a]D20 +41.6° (c = 0.5 in ethanol).
Melting point: mp 90-95°
Optical Rotation: [a]D20 +41.6° (c = 0.5 in ethanol)
 
NOTE: This is a controlled substance (anabolic steroid): 21 CFR, 1308.13, as defined in 1300.01.
Therap-Cat-Vet: Anabolic.

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