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200128-82-1

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200128-82-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 200128-82-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,0,1,2 and 8 respectively; the second part has 2 digits, 8 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 200128-82:
(8*2)+(7*0)+(6*0)+(5*1)+(4*2)+(3*8)+(2*8)+(1*2)=71
71 % 10 = 1
So 200128-82-1 is a valid CAS Registry Number.

200128-82-1Relevant articles and documents

Synthesis of (15E)-17β-hydroxy-5α-androstane-3,15-dione 15-[O-(carboxymethyl)]oxime, new hapten for dihydrotestosterone (17β-hydroxy-5α-androstan-3-one)

Cerny, Ivan,Slavikova, Tereza,Pouzar, Vladimir

, p. 1642 - 1649 (2007/10/03)

Addition of 4-methoxybenzyl alcohol to 3β-hydroxy-5α-androst-15-en-17-one gave the mixture of isomeric 15-(4-methoxyphenyl)methoxy derivatives from which, after acetylation and chromatography, the major 15β isomer was separated. Borohydride reduction gave

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