74632-40-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 74632-40-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,4,6,3 and 2 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 74632-40:
(7*7)+(6*4)+(5*6)+(4*3)+(3*2)+(2*4)+(1*0)=129
129 % 10 = 9
So 74632-40-9 is a valid CAS Registry Number.