21050-38-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 21050-38-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,0,5 and 0 respectively; the second part has 2 digits, 3 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 21050-38:
(7*2)+(6*1)+(5*0)+(4*5)+(3*0)+(2*3)+(1*8)=54
54 % 10 = 4
So 21050-38-4 is a valid CAS Registry Number.