4442-74-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 4442-74-4 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,4,4 and 2 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 4442-74:
(6*4)+(5*4)+(4*4)+(3*2)+(2*7)+(1*4)=84
84 % 10 = 4
So 4442-74-4 is a valid CAS Registry Number.