4219-41-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 4219-41-4 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 4,2,1 and 9 respectively; the second part has 2 digits, 4 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 4219-41:
(6*4)+(5*2)+(4*1)+(3*9)+(2*4)+(1*1)=74
74 % 10 = 4
So 4219-41-4 is a valid CAS Registry Number.