The CAS Registry Mumber 96661-37-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,6,6,6 and 1 respectively; the second part has 2 digits, 3 and 7 respectively. Calculate Digit Verification of CAS Registry Number 96661-37: (7*9)+(6*6)+(5*6)+(4*6)+(3*1)+(2*3)+(1*7)=169 169 % 10 = 9 So 96661-37-9 is a valid CAS Registry Number.
Synthesis of heterocyclic 1,4-dihydropyridylacetic acid derivatives of 6-aminopenicillanic acid and D-α-aminobenzylpenicillin with antibacterial activity
Dubey,Knaus
, p. 559 - 580 (2007/10/02)
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