919970-74-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 919970-74-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 9,1,9,9,7 and 0 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 919970-74:
(8*9)+(7*1)+(6*9)+(5*9)+(4*7)+(3*0)+(2*7)+(1*4)=224
224 % 10 = 4
So 919970-74-4 is a valid CAS Registry Number.