631920-74-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 631920-74-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,3,1,9,2 and 0 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 631920-74:
(8*6)+(7*3)+(6*1)+(5*9)+(4*2)+(3*0)+(2*7)+(1*4)=146
146 % 10 = 6
So 631920-74-6 is a valid CAS Registry Number.