21010-49-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 21010-49-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,0,1 and 0 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 21010-49:
(7*2)+(6*1)+(5*0)+(4*1)+(3*0)+(2*4)+(1*9)=41
41 % 10 = 1
So 21010-49-1 is a valid CAS Registry Number.