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Mesterolone

CAS No.
1424-00-6
Chemical Name:
Mesterolone
Synonyms
proviron;mesterolon;MESTERELONE;testiwop;sh723;NSC-7504;NSC 75054;mestoranum;mesteranum;androviron
CBNumber:
CB9691874
Molecular Formula:
C20H32O2
Molecular Weight:
304.47
MDL Number:
MFCD00133082
MOL File:
1424-00-6.mol
MSDS File:
SDS
Last updated:2025-08-20 16:56:28
Product description Number Pack Size Price
Mesterolone for system suitability European Pharmacopoeia (EP) Reference Standard Y0002127 15 mg $118
Mesterolone analytical standard M7655 100mg $97
Mesterolone ≥95% 21171 1mg $44
Mesterolone ≥95% 21171 5mg $109
MESTEROLONE 95.00% SHG0006368 250MG $721.88
More product size

Mesterolone Properties

Melting point 208 °C
alpha D20 +17.6° (c = 0.875 in CHCl3)
Boiling point 420.3±45.0 °C(Predicted)
Density 1.156 g/cm3
refractive index 17.6 ° (C=0.9, CHCl3)
storage temp. 2-8°C
solubility Practically insoluble in water, sparingly soluble in acetone, in ethyl acetate and in methanol
pka 15.09±0.70(Predicted)
Water Solubility 3mg/L at 20℃
Merck 5916
InChI InChI=1/C20H32O2/c1-12-10-14(21)11-13-4-5-15-16-6-7-18(22)19(16,2)9-8-17(15)20(12,13)3/h12-13,15-18,22H,4-11H2,1-3H3/t12-,13-,15-,16-,17-,18-,19-,20-/s3
InChIKey UXYRZJKIQKRJCF-TZPFWLJSSA-N
SMILES [C@@]12([H])CC[C@@]3([H])CC(=O)C[C@H](C)[C@]3(C)[C@@]1([H])CC[C@]1(C)[C@H](CC[C@@]21[H])O |&1:0,4,10,12,14,18,20,23,r|
CAS DataBase Reference 1424-00-6(CAS DataBase Reference)
FDA UNII 0SRQ75X9I9
ATC code G03BB01

SAFETY

Risk and Safety Statements

Symbol(GHS)  GHS hazard pictogramsGHS hazard pictograms
GHS08,GHS09
Signal word  Danger
Hazard statements  H351-H360FD-H362-H411
Precautionary statements  P202-P260-P263-P264-P273-P308+P313
Hazard Codes  Xn,T,F
Risk Statements  20/21/22-38-19-11-61-60
Safety Statements  22-24/25-36/37/39-45-53
WGK Germany  3
RTECS  BV8063400
HS Code  29372900
DEA Controlled Substances CSCN: 4000
CSA SCH: Schedule III
NARC: No
NFPA 704
0
3 0

Mesterolone price More Price(7)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich Y0002127 Mesterolone for system suitability European Pharmacopoeia (EP) Reference Standard 1424-00-6 15 mg $118 2025-07-31 Buy
Sigma-Aldrich M7655 Mesterolone analytical standard 1424-00-6 100mg $97 2025-07-31 Buy
Cayman Chemical 21171 Mesterolone ≥95% 1424-00-6 1mg $44 2024-03-01 Buy
Cayman Chemical 21171 Mesterolone ≥95% 1424-00-6 5mg $109 2024-03-01 Buy
American Custom Chemicals Corporation SHG0006368 MESTEROLONE 95.00% 1424-00-6 250MG $721.88 2021-12-16 Buy
Product number Packaging Price Buy
Y0002127 15 mg $118 Buy
M7655 100mg $97 Buy
21171 1mg $44 Buy
21171 5mg $109 Buy
SHG0006368 250MG $721.88 Buy

Mesterolone Chemical Properties,Uses,Production

Description

Mesterolone (Item No. 21171) is an analytical reference standard categorized as an anabolic androgenic steroid. Formulations containing mesterolone have been used in patients with low testosterone or symptoms of aging male syndrome. Mesterolone cannot be aromatized to estrogens, unlike other androgens. This compound is the active ingredient in different pharmaceutical preparations that have been used medically but have also been widely applied in sports in order to improve athlete performance. Mesterolone is regulated as a Schedule III drug in the United States. This product is intended for research and forensic applications.

Chemical Properties

White or yellowish crystalline powder.

Originator

Proviron,Schering,W. Germany,1967

Uses

Mesterolone is a synthetic androgen and a dihydrotestosterone derivative. Mesterolone is rarely used for replacement therapies due to its weak androgenic activity.

Definition

ChEBI: Mesterolone is a 3-oxo-5alpha-steroid. It is a structurally altered DHT hormone possessing the addition of a methyl group at the carbon one position. This allows the hormone to survive oral ingestion by protecting it from hepatic breakdown. This is one of the only oral anabolic steroids that is not C17-alpha alkylated (C17-aa) but instead carries the added methyl group.

Application

Mesterolone is a pharmacological agent that belongs to the group of androgens. It is an oral preparation and has been used in the treatment of infectious diseases, autoimmune diseases, and metabolic disorders. It has also been used as a matrix effect control in biological samples. The biological effects of it are mediated by its direct action on cells or through conversion to testosterone or dihydrotestosterone (DHT). These effects include increasing protein synthesis, promoting bone formation, lowering cholesterol levels, stimulating the production of red blood cells, and decreasing fat deposition.

Manufacturing Process

500 mg of 1α-methyl-androstan-17β-ol-3-one-17-acetate are heated under reflux for 90 minutes in a nitrogen atmosphere in 5 ml of 4% methanolic sodium hydroxide solution. The reaction mixture is then stirred into ice water,the precipitated product filtered with suction and recrystallized from isopropyl ether. 1α-Methyl-androstan-17β-ol-3-one melts at 203.5° to 205°C.

Therapeutic Function

Androgen

General Description

Mesterolone is a synthetic anabolic-androgenic steroid (AAS) and derivative of dihydrotestosterone (DHT). It is inactivated by 3α-hydroxysteroid dehydrogenase in skeleta muscules so it is considered a weak androgen. It is not a substrate for aromatase so it is not converted into estrogen. Mesterolone demonstrated to have minimal effect on sperm counts and levels of FSH or LH. Experiments of mesterolone serving as a potential treatment of depression are still undergoing.

Side effects

The main side effects are acne vulgaris, male pattern baldness, prostate enlargement, increased risk for prostate cancer, and increased risk for developing breast cancer.

References

[1] MALCOLM CARRUTHERS  Mark R F  Paul Cathcart. Evolution of testosterone treatment over 25 years: symptom responses, endocrine profiles and cardiovascular changes.[J]. Aging Male, 2015, 18 4: 217-227. DOI: 10.3109/13685538.2015.1048218
[2] HARUN DUGEROGLU. Mesterolone treatment of aging male syndrome improves lower urinary tract symptoms.[J]. Journal of the Pakistan Medical Association, 2014: 1366-1369.
[3] GD LOWE. Mesterolone: thrombosis during treatment, and a study of its prothrombotic effects.[J]. British journal of clinical pharmacology, 1979, 7 1: 107-109. DOI: 10.1111/j.1365-2125.1979.tb00905.x
[4] M. DO?OWY. A Validated TLC-Densitometric Method for the Determination of Mesterolone in Bulk Material and in Tablets[J]. BioMed Research International, 2015, 2015 1. DOI: 10.1155/2015/230104

604-26-2
1424-00-6
Synthesis of Mesterolone from 17beta-hydroxy-1alpha-methylandrost-4-ene-3-one
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View Lastest Price from Mesterolone manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
Mesterolon pictures 2025-11-14 Mesterolon
1424-00-6
US $1.00 / KG 1KG 99.9% 500KG .GZ HONESTCHEM CO.,LTD
Mesterolon pictures 2025-11-14 Mesterolon
1424-00-6
US $1.00 / g 1g 99.8% 1 .GZ HONESTCHEM CO.,LTD
Mesterolone pictures 2025-11-14 Mesterolone
1424-00-6
US $1.00 / KG 1KG 99.9% 500KG .GZ HONESTCHEM CO.,LTD
  • Mesterolon pictures
  • Mesterolon
    1424-00-6
  • US $1.00 / KG
  • 99.9%
  • .GZ HONESTCHEM CO.,LTD
  • Mesterolon pictures
  • Mesterolon
    1424-00-6
  • US $1.00 / g
  • 99.8%
  • .GZ HONESTCHEM CO.,LTD
  • Mesterolone pictures
  • Mesterolone
    1424-00-6
  • US $1.00 / KG
  • 99.9%
  • .GZ HONESTCHEM CO.,LTD
Acetonitrile (test Mesterolone, 1.0 mg/mL) Mesterolone (CIII) 1-alpha-methyl-5-alpha-androstan-17-beta-ol-3-one androviron mesteranum mesterolone--deascheduleiii mestoranum 1-alpha-methyl-17-beta-hydroxy-5-alpha-androstan-3-one 17-beta-hydroxy-1-alpha-methyl-5-alpha-androstan-3-on 17-hydroxy-1-methyl-,(1-alpha,5-alpha,17-beta)-androstan-3-on (1S,5S,8R,9S,10S,13S,14S,17S)-17-hydroxy-1,10,13-triMethyltetradecahydro-1H-cyclopenta[a]phenanthren-3(2H)-one Androstan-3-one,17-hydroxy-1-Methyl-, (1a,5a,17b)- US Testosterone mesterolone solution,100ppm Mesterolone(BP) Mesterolone/Privoron (1α,5α,17β)-17-hydroxy-1-Methylandrostan-3-one 1α-Methyl-17β-hydroxy-5α-androstan-3-one 1α-Methyl-5α-dihydrotestosterone NSC 75054 Mesterolone(Proviron) sh723 1ALPHA-METHYLANDROSTAN-17BETA-OL-3-ONE 17beta-hydroxy-1alpha-methyl-5alpha-androstan-3-one 5-ALPHA-ANDROSTAN-1-ALPHA-METHYL-17-BETA-OL-3-ONE MESTERLONE MESTEROLONE 17β-Hydroxy-1α-methyl-5α-androstan-3-one 1α-Methyl-5α-androstan-17β-ol-3-one 1α-methylandrostan-17β-ol-3-one (1S,5S,8R,9S,10S,13S,14S,17S)-17-hydroxy-1,10,13-trimethyl-1,2,4,5,6,7,8,9,11,12,14,15,16,17-tetradecahydrocyclopenta[a]phenanthren-3-one PROVIRONE25 mesterolone standard solution MesteroloneAcetateBase Mesteronlone 17b-Hydroxy-1a-methyl-5a-androstan-3-one 1a-Methylandrostan-17b-ol-3-one NSC-7504 17-hydroxy-1,10,13-trimethyl-1,2,4,5,6,7,8,9,11,12,14,15,16,17-tetradecahydrocyclopenta[a]phenanthren-3-one 11alpha-Methylandrostan-17beta-ol-3-one Mesterolon (proviron) Mesterolone Proviron powder Mesterolone Proviron \mesterolone Mesterolon skype : honestcooperation Mesterolone CRS Androstan-3-one, 17-hydroxy-1-methyl-, (1α,5α,17β)- mesterolone standard solution, 100ppm The testosterone Mesterolone(Proviron, PRO)-1 gram(13) Mesterolone powder MesteroloneQ: What is Mesterolone Q: What is the CAS Number of Mesterolone Q: What is the storage condition of Mesterolone Mesterolone RAW mesterolon proviron testiwop MESTERELONE masterolone 5α-ANDROSTAN-1α-METHYL-17β-OL-3-ONE