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123742-82-5

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123742-82-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 123742-82-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,3,7,4 and 2 respectively; the second part has 2 digits, 8 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 123742-82:
(8*1)+(7*2)+(6*3)+(5*7)+(4*4)+(3*2)+(2*8)+(1*2)=115
115 % 10 = 5
So 123742-82-5 is a valid CAS Registry Number.

123742-82-5Relevant articles and documents

Asymmetric syntheses of (+)-diltiazem hydrochloride

Watson, Keith G.,Fung, Yik M.,Gredley, Matthew,Bird, Graham J.,Jackson, W. Roy,Gountzos, Helen,Matthews, Barry R.

, p. 1018 - 1019 (1990)

Efficient enantioselective syntheses of the important cardiac drug (+)-cis-(2S,3S)-diltiazem from (E)-methyl 4-methoxyphenylpropenoate via either the (2R,3S)- or (2S,3R)-enantiomers of threo-methyl 3-(4-methoxyphenyl)-2,3- dihydroxypropanoate are described.

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