68647-57-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 68647-57-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,8,6,4 and 7 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 68647-57:
(7*6)+(6*8)+(5*6)+(4*4)+(3*7)+(2*5)+(1*7)=174
174 % 10 = 4
So 68647-57-4 is a valid CAS Registry Number.