1257662-59-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1257662-59-1 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,5,7,6,6 and 2 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1257662-59:
(9*1)+(8*2)+(7*5)+(6*7)+(5*6)+(4*6)+(3*2)+(2*5)+(1*9)=181
181 % 10 = 1
So 1257662-59-1 is a valid CAS Registry Number.