137198-81-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 137198-81-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,7,1,9 and 8 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 137198-81:
(8*1)+(7*3)+(6*7)+(5*1)+(4*9)+(3*8)+(2*8)+(1*1)=153
153 % 10 = 3
So 137198-81-3 is a valid CAS Registry Number.