135691-55-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 135691-55-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,5,6,9 and 1 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 135691-55:
(8*1)+(7*3)+(6*5)+(5*6)+(4*9)+(3*1)+(2*5)+(1*5)=143
143 % 10 = 3
So 135691-55-3 is a valid CAS Registry Number.