16777-91-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 16777-91-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,6,7,7 and 7 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 16777-91:
(7*1)+(6*6)+(5*7)+(4*7)+(3*7)+(2*9)+(1*1)=146
146 % 10 = 6
So 16777-91-6 is a valid CAS Registry Number.