77491-27-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 77491-27-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,4,9 and 1 respectively; the second part has 2 digits, 2 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 77491-27:
(7*7)+(6*7)+(5*4)+(4*9)+(3*1)+(2*2)+(1*7)=161
161 % 10 = 1
So 77491-27-1 is a valid CAS Registry Number.