The CAS Registry Mumber 139985-09-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,9,8 and 5 respectively; the second part has 2 digits, 0 and 9 respectively. Calculate Digit Verification of CAS Registry Number 139985-09: (8*1)+(7*3)+(6*9)+(5*9)+(4*8)+(3*5)+(2*0)+(1*9)=184 184 % 10 = 4 So 139985-09-4 is a valid CAS Registry Number.
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Get Best Price for139985-09-42H-Pyrido[3,4-b]indole-2-carboxylic acid,
3-[[[4-(ethoxycarbonyl)phenyl]amino]carbonyl]-1,3,4,9-tetrahydro-,
phenylmethyl ester, (R)-