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81635-76-9

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81635-76-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 81635-76-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,1,6,3 and 5 respectively; the second part has 2 digits, 7 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 81635-76:
(7*8)+(6*1)+(5*6)+(4*3)+(3*5)+(2*7)+(1*6)=139
139 % 10 = 9
So 81635-76-9 is a valid CAS Registry Number.

81635-76-9Downstream Products

81635-76-9Relevant articles and documents

Esters of 1,4-dihydropyridine-3- and -3,5-carbothiolic acids

Vigante,Ozols,Dubur,Beilis,Belash,Prezhdo

, p. 170 - 178 (2007/10/02)

Methods for the preparation of esters of 1,4-dihydropyridine-3- and -3,5-carbothiolic acids were developed, and their structure and reactivity were studied. A comparative analysis was made of the spectroscopic characteristics of sulfur-containing esters of the 1,4-dihydropyridine series and their oxygen analogs. More strongly expressed electron-acceptor properties of the COSAlk groupings as compared with alkoxycarbonyl substituents were observed.

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