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916912-25-9

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916912-25-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 916912-25-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,1,6,9,1 and 2 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 916912-25:
(8*9)+(7*1)+(6*6)+(5*9)+(4*1)+(3*2)+(2*2)+(1*5)=179
179 % 10 = 9
So 916912-25-9 is a valid CAS Registry Number.

916912-25-9Relevant articles and documents

Synthesis of some new unsymmetrically substituted 1,4-dihydropyridines

Memarian, Hamid R.,Abdoli-Senejani, Masumeh,D?pp, Dietrich

, p. 50 - 56 (2008/02/10)

A series of some new 3,5-unsymmetrically substituted 1,4-dihydropyridines have been synthesized, which have ethoxycarbonyl and acetyl groups on 3- and 5-positions, respectively. A three-step procedure has been examined to increase the yield of the desired products, by suppressing the formation of the symmetrically substituted 3,5-diacetyl-1,4-dihydropyridines and 3,5-diethoxycarbonyl-1,4-dihydropyridines.

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