237-42-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 237-42-3 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 2,3 and 7 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 237-42:
(5*2)+(4*3)+(3*7)+(2*4)+(1*2)=53
53 % 10 = 3
So 237-42-3 is a valid CAS Registry Number.