137164-77-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 137164-77-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,7,1,6 and 4 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 137164-77:
(8*1)+(7*3)+(6*7)+(5*1)+(4*6)+(3*4)+(2*7)+(1*7)=133
133 % 10 = 3
So 137164-77-3 is a valid CAS Registry Number.