Pregna-4,6-diene-3,20-dione,17-(acetyloxy)-6-methyl-16-methylene-

IUPAC Name: (17-Acetyl-6,10,13-Trimethyl-16-methylidene-3-oxo-1,2,8,9,11,12,14,15-octahydrocyclopenta[a]phenanthren-17-yl) acetate
EINECS: 220-859-7
Molecular Formula: C₂₅H₃₂O₄
Molecular Weight: 396.52 g/mol
Melting Point: 202-204 °C(lit.)
storage temp.: 0-6 °C 
Index of Refraction: 1.554
Molar Refractivity: 110.58 cm³
Density: 1.15 g/cm³ 
Flash Point: 221.7 °C
Boiling Point: 516.1 °C at 760 mmHg 
Molar Volume: 344.6 cm³
Surface Tension: 43.5 dyne/cm
Enthalpy of Vaporization: 78.81 kJ/mol 
Classification Code: Adrenal Cortex Hormones; Antineoplastic; Glucocorticoids; Hormone; Hormones; Hormones, Hormone Substitutes, and Hormone Antagonists; Progestin; Reproductive
Product Categories: Hormone; Steroids 
Vapour Pressure of Melengestrol acetate (CAS NO.2919-66-6): 9.29E-11 mmHg at 25 °C

  Melengestrol acetate (CAS NO.2919-66-6) is approved for use as a growth promoter in livestock, including beef cattle, in the United States. Its use is not approved in the European Union or Canada.

An experimental teratogen. Experimental reproductive effects. When heated to decomposition it yields acrid smoke and irritating fumes.
Hazard Codes:Xn
Risk Statements: 62 
R62:Risk of impaired fertility.
Safety Statements: 36 
S36:Wear suitable protective clothing. 
WGK Germany: 3
RTECS: TU4141000

  Melengestrol acetate (CAS NO.2919-66-6), its Synonyms are 17-Hydroxy-6-methyl-16-methylenepregna-4,6-diene-3,20-dione acetate ; 6-Dehydro-16-methylene-6-methyl-17-acetoxyprogesterone ; BDH 1921 ; CCRIS 7800 ; 17-(acetyloxy)-6-methyl-16-methylenepregna-4,6-diene-3,20-dione(9CI) ; Pregna-4,6-diene-3,20-dione, 17-(acetyloxy)-6-methyl-16-methylene- ; Pregna-4,6-diene-3,20-dione, 17-hydroxy-6-methyl-16-methylene-, acetate ; MGA ; MGA (Veterinary) ; MGA 100 ; MGA 100 (steroid) ; MGA 500 .