137688-61-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 137688-61-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,7,6,8 and 8 respectively; the second part has 2 digits, 6 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 137688-61:
(8*1)+(7*3)+(6*7)+(5*6)+(4*8)+(3*8)+(2*6)+(1*1)=170
170 % 10 = 0
So 137688-61-0 is a valid CAS Registry Number.