137937-81-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 137937-81-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,7,9,3 and 7 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 137937-81:
(8*1)+(7*3)+(6*7)+(5*9)+(4*3)+(3*7)+(2*8)+(1*1)=166
166 % 10 = 6
So 137937-81-6 is a valid CAS Registry Number.