75631-91-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 75631-91-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,5,6,3 and 1 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 75631-91:
(7*7)+(6*5)+(5*6)+(4*3)+(3*1)+(2*9)+(1*1)=143
143 % 10 = 3
So 75631-91-3 is a valid CAS Registry Number.