The CAS Registry Mumber 103197-05-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,3,1,9 and 7 respectively; the second part has 2 digits, 0 and 5 respectively. Calculate Digit Verification of CAS Registry Number 103197-05: (8*1)+(7*0)+(6*3)+(5*1)+(4*9)+(3*7)+(2*0)+(1*5)=93 93 % 10 = 3 So 103197-05-3 is a valid CAS Registry Number.
Novel synthesis of the aldose reductase inhibitor sorbinil via amidoalkylation, intramolecular oxazolidin-5-one alkylation, and chymotrypsin resolution
Dirlam,Moore,Urban
, p. 3587 - 3591 (1987)
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