77954-11-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 77954-11-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,7,9,5 and 4 respectively; the second part has 2 digits, 1 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 77954-11:
(7*7)+(6*7)+(5*9)+(4*5)+(3*4)+(2*1)+(1*1)=171
171 % 10 = 1
So 77954-11-1 is a valid CAS Registry Number.