731817-37-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 731817-37-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 7,3,1,8,1 and 7 respectively; the second part has 2 digits, 3 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 731817-37:
(8*7)+(7*3)+(6*1)+(5*8)+(4*1)+(3*7)+(2*3)+(1*7)=161
161 % 10 = 1
So 731817-37-1 is a valid CAS Registry Number.