251557-12-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 251557-12-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,1,5,5 and 7 respectively; the second part has 2 digits, 1 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 251557-12:
(8*2)+(7*5)+(6*1)+(5*5)+(4*5)+(3*7)+(2*1)+(1*2)=127
127 % 10 = 7
So 251557-12-7 is a valid CAS Registry Number.