40642-13-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 40642-13-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,0,6,4 and 2 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 40642-13:
(7*4)+(6*0)+(5*6)+(4*4)+(3*2)+(2*1)+(1*3)=85
85 % 10 = 5
So 40642-13-5 is a valid CAS Registry Number.