Dehydromethyltestosterone

Metandienone

Clinical data
Trade names	Averbol, Dianabol, Danabol, Metanabol, Naposim, Vetanabol
Pregnancy category	US: X (Contraindicated)
Routes of administration	Oral
ATC code	A14AA03 (WHO) D11AE01 (WHO)
Legal status
Legal status	CA: Schedule IV US: Schedule III
Pharmacokinetic data
Metabolism	Hepatic
Biological half-life	4.5–6 hours
Excretion	Renal
Identifiers
IUPAC name (8S,9S,10S,13S,14S,17S)-17-Hydroxy-10,13,17-trimethyl-7,8,9,11,12,14,15,16-octahydro-6H-cyclopenta[a]phenanthren-3-one
Synonyms	Methandienone; Methandrostenolone; Methandrolone; Dehydromethyltestosterone; Methylboldenone; NSC-51180; NSC-42722; 17α-Methyl-δ1-testosterone; 17α-Methylandrost-1,4-dien-17β-ol-3-one
CAS Number	72-63-9 Y
PubChem CID	6300
ChemSpider	6061 Y
UNII	COZ1R7EOCC
ChEMBL	CHEMBL1418176 N
ECHA InfoCard	100.000.716
Chemical and physical data
Formula	C20H28O2
Molar mass	300.441 g/mol
3D model (JSmol)	Interactive image
SMILES O=C\1\C=C/[C@]4(/C(=C/1)CC[C@@H]3[C@@H]4CC[C@]2([C@H]3CC[C@@]2(O)C)C)C
InChI InChI=1S/C20H28O2/c1-18-9-6-14(21)12-13(18)4-5-15-16(18)7-10-19(2)17(15)8-11-20(19,3)22/h6,9,12,15-17,22H,4-5,7-8,10-11H2,1-3H3/t15-,16+,17+,18+,19+,20+/m1/s1 Y Key:XWALNWXLMVGSFR-HLXURNFRSA-N Y
NY (what is this?)

Metandienone (INN) (brand names Averbol, Dianabol, Danabol, Metanabol, Naposim, Vetanabol), or methandienone (BAN), also commonly known as methandrostenolone, is a synthetic, orally active anabolic-androgenic steroid (AAS) and a 17α-methylated derivative of testosterone which was formerly used medically but has since been discontinued in most countries. It has also seen non-medical use as a performance-enhancing drug.

Metandienone was originally developed in 1957 by CIBA and marketed in Germany and the United States. As the CIBA product Dianabol, metandienone quickly became the first widely used AAS among professional and amateur athletes, and remains the most common orally active AAS for non-medical use.

It is currently a controlled substance in the U.S. and U.K. and remains popular among bodybuilders. Metandienone is readily available without a prescription in certain countries such as Mexico (under the brand name Reforvit-b), and is also manufactured in some Asian countries.

Metandienone was formerly approved and marketed for the treatment of hypogonadism, but has since been discontinued and withdrawn in most countries, including in the United States.

It is used by bodybuilders and metandienone continues to be used illegally to this day, typically being combined (stacked) with injectable compounds, such as testosterone propionate, enanthate, cypionate as well as other injectable drugs like trenbolone acetate.