137766-83-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 137766-83-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,7,7,6 and 6 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 137766-83:
(8*1)+(7*3)+(6*7)+(5*7)+(4*6)+(3*6)+(2*8)+(1*3)=167
167 % 10 = 7
So 137766-83-7 is a valid CAS Registry Number.