16937-31-8 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 16937-31-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,6,9,3 and 7 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 16937-31:
(7*1)+(6*6)+(5*9)+(4*3)+(3*7)+(2*3)+(1*1)=128
128 % 10 = 8
So 16937-31-8 is a valid CAS Registry Number.