21199-47-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 21199-47-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,1,9 and 9 respectively; the second part has 2 digits, 4 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 21199-47:
(7*2)+(6*1)+(5*1)+(4*9)+(3*9)+(2*4)+(1*7)=103
103 % 10 = 3
So 21199-47-3 is a valid CAS Registry Number.