91747-72-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 91747-72-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,7,4 and 7 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 91747-72:
(7*9)+(6*1)+(5*7)+(4*4)+(3*7)+(2*7)+(1*2)=157
157 % 10 = 7
So 91747-72-7 is a valid CAS Registry Number.