137231-83-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 137231-83-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,7,2,3 and 1 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 137231-83:
(8*1)+(7*3)+(6*7)+(5*2)+(4*3)+(3*1)+(2*8)+(1*3)=115
115 % 10 = 5
So 137231-83-5 is a valid CAS Registry Number.