AnabolicSteroidEthisteronepowder434-03-7CASNo.:434-03-7Synonyms:434-03-7;Ethisterone;AnabolicSteroid,Ethinyl***，ProgestoralFormula:C21H28O2MolecularWeight:312.49EINECS:207-096-5MeltingPoint:263-269°C(lit.)BoilingPoint:446.4°Cat760mmHgFlashPoint:190.2°CRiskCodes:40-48Safety:22-24/25Purity:≥99%Application:APIStorage:KeepindryplacePackAge:IndrumorbagDeliveryTime:Within2daysafterpaymentAppearance:WhitetoyellowishpowderUsage:Syntheticprogestogen;metaboliteofDanazol;intermediateinthesynthesisofSpironolactonedescription:Ethisteroneisaprogestogenhormone.Thefirstorallyactiveprogestin,ethisterone(pregneninolone,17α-ethynyl***or19-norandrostane),the17α-ethynylanalogof***,wassynthesizedin1938byHansHerloffInhoffen,WillyLogemann,WalterHohlweg,andArthurSeriniatScheringAGinBerlinandmarketedinGermanyin1939asProlutonCandbyScheringintheU.S.in1945asPranone.EthisteronewasalsomarketedintheU.S.fromthe1950sintothe1960sunderavarietyoftradenamesbyotherpharmaceuticalcompaniesthathadbeenmembersofthepre-WorldWarIIEuropeanhormonecartel(Ciba,Organon,Roussel)COA:ProductnameEthisteroneAppearanceWhitecrystallinepowderWater¡Ü3%passAssay98.0~102.0%99.5%Lossondrying¡Ü0.5%0.2%Relatedsubstancestotalimpurities¡Ü1.0%Passanyindividualimpurity¡Ü0.5%PassResidualsolventsethanol¡Ü0.5%Pass)