Cas 23352-80-9,methyl-dihydrostreptobiosaminide

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Check Digit Verification of cas no

The CAS Registry Mumber 23352-80-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,3,3,5 and 2 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 23352-80:
(7*2)+(6*3)+(5*3)+(4*5)+(3*2)+(2*8)+(1*0)=89
89 % 10 = 9
So 23352-80-9 is a valid CAS Registry Number.

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23352-80-9Relevant articles and documents

SYNTHESIS OF 6-DEOXYDIHYDROSTREPTOMYCIN

Tsuchiya, Tsutomu,Kishi, Teruo,Kobayashi, Shigeru,Kobayashi, Yoshihiko,Umezawa, Sumio,Umezawa, Hamao

, p. 69 - 78 (2007/10/02)

6-Deoxydihydrostreptomycin (8) has been prepared from dihydrostreptomycin by a sequence of reactions involving 2''-N-benzyloxycarbonylation, 3a',6''-ditritylation, selective 6-O-tosylation, displacement of the tosyloxy group with chloride, and hydrogenoly

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23352-80-9