919971-15-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 919971-15-6 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 1 respectively; the second part has 2 digits, 1 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 919971-15:
(8*9)+(7*1)+(6*9)+(5*9)+(4*7)+(3*1)+(2*1)+(1*5)=216
216 % 10 = 6
So 919971-15-6 is a valid CAS Registry Number.