21144-23-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 21144-23-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,1,4 and 4 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 21144-23:
(7*2)+(6*1)+(5*1)+(4*4)+(3*4)+(2*2)+(1*3)=60
60 % 10 = 0
So 21144-23-0 is a valid CAS Registry Number.