136-68-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 136-68-5 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 1,3 and 6 respectively; the second part has 2 digits, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 136-68:
(5*1)+(4*3)+(3*6)+(2*6)+(1*8)=55
55 % 10 = 5
So 136-68-5 is a valid CAS Registry Number.