91671-83-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 91671-83-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,6,7 and 1 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 91671-83:
(7*9)+(6*1)+(5*6)+(4*7)+(3*1)+(2*8)+(1*3)=149
149 % 10 = 9
So 91671-83-9 is a valid CAS Registry Number.