19677-54-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 19677-54-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,6,7 and 7 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 19677-54:
(7*1)+(6*9)+(5*6)+(4*7)+(3*7)+(2*5)+(1*4)=154
154 % 10 = 4
So 19677-54-4 is a valid CAS Registry Number.