157636-45-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 157636-45-8 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,7,6,3 and 6 respectively; the second part has 2 digits, 4 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 157636-45:
(8*1)+(7*5)+(6*7)+(5*6)+(4*3)+(3*6)+(2*4)+(1*5)=158
158 % 10 = 8
So 157636-45-8 is a valid CAS Registry Number.
InChI:InChI=1/C27H44O2/c1-18(2)7-6-8-19(3)27(29)16-13-24-22-10-9-20-17-21(28)11-14-25(20,4)23(22)12-15-26(24,27)5/h17-19,22-24,29H,6-16H2,1-5H3/t19-,22-,23+,24+,25+,26+,27+/m1/s1
157636-45-8Relevant articles and documents
Some reactions of 16α,17α-oxido-5α-cholestane derivatives, synthesis of 17α-hydroxycholest-4-en-3-one
Velgova, Helena,Kasal, Alexander,Budinsky, Milo
, p. 335 - 340 (2007/10/02)
Careful epoxidation of the Δ16-olefins 3 and 4 yielded 16α,17α- epoxides 5 and 6 which were reduced by lithium aluminium hydride, oxidized, and dehydrated to 17α-hydroxycholest-4-en-3-one 20, i.e., an epitestosterone homolog containing a well t
