637781-10-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 637781-10-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,3,7,7,8 and 1 respectively; the second part has 2 digits, 1 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 637781-10:
(8*6)+(7*3)+(6*7)+(5*7)+(4*8)+(3*1)+(2*1)+(1*0)=183
183 % 10 = 3
So 637781-10-3 is a valid CAS Registry Number.