1213937-11-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1213937-11-1 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,1,3,9,3 and 7 respectively; the second part has 2 digits, 1 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1213937-11:
(9*1)+(8*2)+(7*1)+(6*3)+(5*9)+(4*3)+(3*7)+(2*1)+(1*1)=131
131 % 10 = 1
So 1213937-11-1 is a valid CAS Registry Number.