637311-52-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 637311-52-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,3,7,3,1 and 1 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 637311-52:
(8*6)+(7*3)+(6*7)+(5*3)+(4*1)+(3*1)+(2*5)+(1*2)=145
145 % 10 = 5
So 637311-52-5 is a valid CAS Registry Number.