Cas 512779-34-9,Diphenyl-phosphinic acid 1-[(3S,8R,9S,10R,13S,14S)-3-(tert-butyl-dimethyl-silanyloxy)-10,13-dimethyl-2,3,4,7,8,9,10,11,12,13,14,15-dodecahydro-1H-cyclopenta[a]phenanthren-17-yl]-2,2-difluoro-1-methyl-ethyl ester

512779-34-9

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Basic information

Product Name: Diphenyl-phosphinic acid 1-[(3S,8R,9S,10R,13S,14S)-3-(tert-butyl-dimethyl-silanyloxy)-10,13-dimethyl-2,3,4,7,8,9,10,11,12,13,14,15-dodecahydro-1H-cyclopenta[a]phenanthren-17-yl]-2,2-difluoro-1-methyl-ethyl ester
Synonyms: Diphenyl-phosphinic acid 1-[(3S,8R,9S,10R,13S,14S)-3-(tert-butyl-dimethyl-silanyloxy)-10,13-dimethyl-2,3,4,7,8,9,10,11,12,13,14,15-dodecahydro-1H-cyclopenta[a]phenanthren-17-yl]-2,2-difluoro-1-methyl-ethyl ester
CAS NO:512779-34-9
Molecular Formula:
Molecular Weight: 680.931
EINECS: N/A
Product Categories: N/A
Mol File: 512779-34-9.mol
Article Data: 1

Chemical Properties

Melting Point: N/A
Boiling Point: N/A
Flash Point: N/A
Appearance: N/A
Density: N/A
Refractive Index: N/A
Storage Temp.: N/A
Solubility: N/A
CAS DataBase Reference: Diphenyl-phosphinic acid 1-[(3S,8R,9S,10R,13S,14S)-3-(tert-butyl-dimethyl-silanyloxy)-10,13-dimethyl-2,3,4,7,8,9,10,11,12,13,14,15-dodecahydro-1H-cyclopenta[a]phenanthren-17-yl]-2,2-difluoro-1-methyl-ethyl ester(CAS DataBase Reference)
NIST Chemistry Reference: Diphenyl-phosphinic acid 1-[(3S,8R,9S,10R,13S,14S)-3-(tert-butyl-dimethyl-silanyloxy)-10,13-dimethyl-2,3,4,7,8,9,10,11,12,13,14,15-dodecahydro-1H-cyclopenta[a]phenanthren-17-yl]-2,2-difluoro-1-methyl-ethyl ester(512779-34-9)
EPA Substance Registry System: Diphenyl-phosphinic acid 1-[(3S,8R,9S,10R,13S,14S)-3-(tert-butyl-dimethyl-silanyloxy)-10,13-dimethyl-2,3,4,7,8,9,10,11,12,13,14,15-dodecahydro-1H-cyclopenta[a]phenanthren-17-yl]-2,2-difluoro-1-methyl-ethyl ester(512779-34-9)

Safety Data

Hazard Codes: N/A
Statements: N/A
Safety Statements: N/A
WGK Germany:
RTECS:
HazardClass: N/A
PackingGroup: N/A
Hazardous Substances Data: 512779-34-9(Hazardous Substances Data)

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Check Digit Verification of cas no

The CAS Registry Mumber 512779-34-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,1,2,7,7 and 9 respectively; the second part has 2 digits, 3 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 512779-34:
(8*5)+(7*1)+(6*2)+(5*7)+(4*7)+(3*9)+(2*3)+(1*4)=159
159 % 10 = 9
So 512779-34-9 is a valid CAS Registry Number.

512779-34-9Upstream product

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512779-34-9Relevant articles and documents

Synthesis of 21,21-difluoro-3β-hydroxy-20-methylpregna-5,20-diene and 5,16,20-triene as potential inhibitors of steroid C17(20) lyase

Weintraub, Philip M.,Holland, Amy K.,Gates, Cynthia A.,Moore, William R.,Resvick, Robert J.,Bey, Philippe,Peet, Norton P.

, p. 427 - 431 (2003)

Novel 21,21-difluorovinyl steroids, designed as difluorinated C20(21) enol mimics of pregnenolone, were targeted as potential mechanism-based inhibitors of C17(20)lyase, a crucial enzyme in the biosynthesis of testosterone. Addition of (difluoromethyl)diphenylphosphine oxide reagent to 17-acetyl steroids was the approach chosen for the construction of these compounds. Of particular interest were the abnormal Wittig products which formed during attempted preparation of the triene 9. The target difluoroolefin 3 was found to be a moderately potent, time-dependent inhibitor of the enzyme.

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