637309-03-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 637309-03-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,3,7,3,0 and 9 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 637309-03:
(8*6)+(7*3)+(6*7)+(5*3)+(4*0)+(3*9)+(2*0)+(1*3)=156
156 % 10 = 6
So 637309-03-6 is a valid CAS Registry Number.