31938-12-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 31938-12-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,1,9,3 and 8 respectively; the second part has 2 digits, 1 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 31938-12:
(7*3)+(6*1)+(5*9)+(4*3)+(3*8)+(2*1)+(1*2)=112
112 % 10 = 2
So 31938-12-2 is a valid CAS Registry Number.