16691-36-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 16691-36-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,6,6,9 and 1 respectively; the second part has 2 digits, 3 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 16691-36:
(7*1)+(6*6)+(5*6)+(4*9)+(3*1)+(2*3)+(1*6)=124
124 % 10 = 4
So 16691-36-4 is a valid CAS Registry Number.