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22034-83-9

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22034-83-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 22034-83-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,2,0,3 and 4 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 22034-83:
(7*2)+(6*2)+(5*0)+(4*3)+(3*4)+(2*8)+(1*3)=69
69 % 10 = 9
So 22034-83-9 is a valid CAS Registry Number.

22034-83-9Upstream product

22034-83-9Downstream Products

22034-83-9Relevant articles and documents

SYNTHETIC STUDIES IN THE CARDENOLIDE SERIES-II STEREOSPECIFIC INTRODUCTION OF C-17 SIDE CHAIN

Beloeil, J. C.,Bertranne, M.,Fetizon, M.

, p. 3937 - 3942 (2007/10/02)

Direct preparation of 14β-hydroxy steroids from 14α-H compounds is described; a 15β-hydroxy-14α-H compound is also obtained.Grignard reagents react with 14β-hydroxy-androstan-17-one in the "normal way", giving a 17β-side chain, but surprisingly organolithium reagents give the unexpected 17α-side chain.

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