MedKoo Cat#: 315338 | Name: Cyproterone acetate
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Description:

WARNING: This product is for research use only, not for human or veterinary use.

Cyproterone acetate is an antiandrogen, i.e. it suppresses the actions of testosterone (and its metabolite dihydrotestosterone) on tissues. It acts by blocking androgen receptors which prevents androgens from binding to them and suppresses luteinizing hormone (which in turn reduces testosterone levels). Its main indications are prostate cancer, benign prostatic hyperplasia, priapism, hypersexuality and other conditions in which androgen action maintains the disease process. Due to its anti-androgen effect, it can also be used to treat hirsutism, and is a common component in hormone therapy for male-to-female transsexual people.

Chemical Structure

Cyproterone acetate
Cyproterone acetate
CAS#427-51-0

Theoretical Analysis

MedKoo Cat#: 315338

Name: Cyproterone acetate

CAS#: 427-51-0

Chemical Formula: C24H29ClO4

Exact Mass: 416.1754

Molecular Weight: 416.94

Elemental Analysis: C, 69.14; H, 7.01; Cl, 8.50; O, 15.35

Price and Availability

Size Price Availability Quantity
250mg USD 450.00 2 Weeks
500mg USD 750.00 2 Weeks
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Related CAS #
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Synonym
Cyprostat; Cyproteron; Procur; Cyprone; Cyprohexal; Ciproterona; Cyproteronum; Neoproxil; Siterone; SH 714; SH714; SH-714; Androcur; Cyproviron; Cyprostat; CPA; NSC 81430; NSC-81430; NSC81430;
IUPAC/Chemical Name
(2aR,3aS,3bS,3cS,5aS,6R,8aS,8bR)-6-acetyl-10-chloro-3b,5a-dimethyl-2-oxo-2,2a,3,3a,3b,3c,4,5,5a,6,7,8,8a,8b-tetradecahydrocyclopenta[a]cyclopropa[g]phenanthren-6-yl acetate
InChi Key
UWFYSQMTEOIJJG-FDTZYFLXSA-N
InChi Code
InChI=1S/C24H29ClO4/c1-12(26)24(29-13(2)27)8-6-16-14-10-20(25)19-11-21(28)15-9-18(15)23(19,4)17(14)5-7-22(16,24)3/h10-11,14-18H,5-9H2,1-4H3/t14-,15+,16-,17-,18-,22-,23-,24-/m0/s1
SMILES Code
CC(O[C@]1(C(C)=O)CC[C@]2([H])[C@]1(C)CC[C@]3([H])[C@@]4(C)[C@](C5)([H])[C@]5([H])C(C=C4C(Cl)=C[C@@]23[H])=O)=O
Appearance
Solid powder
Purity
>98% (or refer to the Certificate of Analysis)
Shipping Condition
Shipped under ambient temperature as non-hazardous chemical. This product is stable enough for a few weeks during ordinary shipping and time spent in Customs.
Storage Condition
Dry, dark and at 0 - 4 C for short term (days to weeks) or -20 C for long term (months to years).
Solubility
Soluble in DMSO.
Shelf Life
>2 years if stored properly
Drug Formulation
This drug may be formulated in DMSO
Stock Solution Storage
0 - 4 C for short term (days to weeks), or -20 C for long term (months).
HS Tariff Code
2934.99.9001
More Info

Preparing Stock Solutions

The following data is based on the product molecular weight 416.94 Batch specific molecular weights may vary from batch to batch due to the degree of hydration, which will affect the solvent volumes required to prepare stock solutions.

Recalculate based on batch purity %
Concentration / Solvent Volume / Mass 1 mg 5 mg 10 mg
1 mM 1.15 mL 5.76 mL 11.51 mL
5 mM 0.23 mL 1.15 mL 2.3 mL
10 mM 0.12 mL 0.58 mL 1.15 mL
50 mM 0.02 mL 0.12 mL 0.23 mL
1: Barradell LB, Faulds D. Cyproterone. A review of its pharmacology and therapeutic efficacy in prostate cancer. Drugs Aging. 1994 Jul;5(1):59-80. doi: 10.2165/00002512-199405010-00006. PMID: 7919640. 2: Mothes C. Cyproterone acetate. Lancet. 1976 Nov 6;2(7993):1020. doi: 10.1016/s0140-6736(76)90851-5. PMID: 62231. 3: Pinganaud G, Chaslerie A, Bourdel Marchasson I, Decamps A, Manciet G, Emeriau JP. Cyproterone-induced hepatotoxicity. Ann Pharmacother. 1995 Jun;29(6):634. doi: 10.1177/106002809502900619. PMID: 7663042. 4: de Voogt HJ. Cyproterone acetate as monotherapy in prospective randomized trials. Prog Clin Biol Res. 1990;359:85-91; discussion 105-7. PMID: 2149459. 5: Goldenberg SL, Bruchovsky N. Use of cyproterone acetate in prostate cancer. Urol Clin North Am. 1991 Feb;18(1):111-22. PMID: 1825143. 6: Paulsen CA. Letter: Cyproterone acetate. Lancet. 1976 Jun 5;1(7971):1246. PMID: 58294. 7: Neumann F, Kalmus J. Cyproterone acetate in the treatment of sexual disorders: pharmacological base and clinical experience. Exp Clin Endocrinol. 1991;98(2):71-80. doi: 10.1055/s-0029-1211103. PMID: 1838080. 8: Neumann F, Wiechert R. Das Antiandrogen Cyproteronacetat. Seine Geschichte von der Entdeckung bis zur Marktreife [The antiandrogen cyproterone acetate. Its history from discovery to marketing]. Pharm Unserer Zeit. 1988 Mar;17(2):33-50. German. doi: 10.1002/pauz.19880170202. PMID: 2967500. 9: Chapman MG, Jeffcoate SL, Dewhurst J. Cyproterone acetate and adrenosuppression. Lancet. 1981 Aug 22;2(8243):417. doi: 10.1016/s0140-6736(81)90853-9. PMID: 6115178. 10: Tunn UW. Cyproterone acetate in the management of prostatic cancer. Prog Clin Biol Res. 1989;303:105-10. PMID: 2528734. 11: de Voogt HJ. The position of cyproterone acetate (CPA), a steroidal anti- androgen, in the treatment of prostate cancer. Prostate Suppl. 1992;4:91-5. doi: 10.1002/pros.2990210514. PMID: 1533452. 12: Miller JA, Jacobs HS. Treatment of hirsutism and acne with cyproterone acetate. Clin Endocrinol Metab. 1986 May;15(2):373-89. doi: 10.1016/s0300-595x(86)80031-7. PMID: 2941191. 13: Greenwood R, Burke B, Brummitt L, Cunliffe WJ. Cyclic cyproterone/ethinyloestradiol for acne. Lancet. 1983 Oct 1;2(8353):796. doi: 10.1016/s0140-6736(83)92331-0. PMID: 6137631. 14: Cooper AJ, Cernovovsky Z. The effects of cyproterone acetate on sleeping and waking penile erections in pedophiles: possible implications for treatment. Can J Psychiatry. 1992 Feb;37(1):33-9. doi: 10.1177/070674379203700108. PMID: 1532338. 15: Davies TS. Cyproterone acetate for male hypersexuality. J Int Med Res. 1974;2(2):159-63. doi: 10.1177/030006057400200211. PMID: 4468912. 16: von Mühlendahl KE, Korth-Schütz S, Müller-Hess R, Helge H, Weber B. Cyproterone acetate and adrenocortical function. Lancet. 1977 May 28;1(8022):1160-1. doi: 10.1016/s0140-6736(77)92426-6. PMID: 68264. 17: Schuppler J, Günzel P. Letter: Cyproterone acetate. Lancet. 1976 Sep 25;2(7987):688. doi: 10.1016/s0140-6736(76)92498-3. PMID: 60545. 18: Byrne A, Brunet B, McGann P. Cyproterone acetate therapy and aggression. Br J Psychiatry. 1992 Feb;160:282-3. doi: 10.1192/bjp.160.2.282. PMID: 1531776. 19: Bercovici JP. Acétate de cyprotérone [Cyproterone acetate]. Ann Endocrinol (Paris). 1983;44(6):385. French. PMID: 6234848. 20: Kauli R, Pertzelan A, Prager-Lewin R, Grünebaum M, Laron Z. Cyproterone acetate in treatment of precocious puberty. Arch Dis Child. 1976 Mar;51(3):202-8. doi: 10.1136/adc.51.3.202. PMID: 952553; PMCID: PMC1545909.