tert-butyl-[(1R,3S,5Z)-3-[tert-butyl(dimethyl)silyl]oxy-5-(2-diphenylphosphorylethylidene)-4-methylidenecyclohexyl]oxy-dimethylsilane

[3S-(1Z,3a,5b)]-[2-[3,5-二[(叔丁基)二甲基硅氧基]-2-亚甲基环己亚基]乙基]二苯基氧化膦

Also known as: PHOSPHINE OXIDE, [2-[3,5-BIS[[(1,1-DIMETHYLETHYL) DIMETHYLSILY]OXY]-2-METHYLENECYCLOHEXYLIDENE]ETHYL]DIPHENYL-,[3S-(1Z,3A,5B0)], (2Z)-2-[(3S,5R)-3,5-bis(tert-butyldimethylsilanyloxy)-2-methylenecyclohexylidene]ethyl]diphenylphosphine oxide, intermediate for vitamin D, carbotriol A ring double TBS intermediate

tert-butyl-[(1R,3S,5Z)-3-[tert-butyl(dimethyl)silyl]oxy-5-(2-diphenylphosphorylethylidene)-4-methylidenecyclohexyl]oxy-dimethylsilane (CAS 81522-68-1) is a compound in the Aromatic Hydrocarbons category listed in the Jingsj chemical database. It has the molecular formula C33H51O3PSi2 and a molecular weight of 582.90100 g/mol. It is also known as PHOSPHINE OXIDE, [2-[3,5-BIS[[(1,1-DIMETHYLETHYL) DIMETHYLSILY]OXY]-2-METHYLENECYCLOHEXYLIDENE]ETHYL]DIPHENYL-,[3S-(1Z,3A,5B0)], (2Z)-2-[(3S,5R)-3,5-bis(tert-butyldimethylsilanyloxy)-2-methylenecyclohexylidene]ethyl]diphenylphosphine oxide and intermediate for vitamin D. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.

81522-68-1

Jingsj CID

J-1971896-1

Molecular Formula

C₃₃H₅₁O₃PSi₂

Chinese Name

[3S-(1Z,3a,5b)]-[2-[3,5-二[(叔丁基)二甲基硅氧基]-2-亚甲基环己亚基]乙基]二苯基氧化膦

Molecular Weight

582.90100 g/mol

Category

Aromatic Hydrocarbons

Last updated

8/21/2026