3642-04-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 3642-04-4 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 3,6,4 and 2 respectively; the second part has 2 digits, 0 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 3642-04:
(6*3)+(5*6)+(4*4)+(3*2)+(2*0)+(1*4)=74
74 % 10 = 4
So 3642-04-4 is a valid CAS Registry Number.