72757-91-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 72757-91-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,2,7,5 and 7 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 72757-91:
(7*7)+(6*2)+(5*7)+(4*5)+(3*7)+(2*9)+(1*1)=156
156 % 10 = 6
So 72757-91-6 is a valid CAS Registry Number.