21994-32-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 21994-32-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,9,9 and 4 respectively; the second part has 2 digits, 3 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 21994-32:
(7*2)+(6*1)+(5*9)+(4*9)+(3*4)+(2*3)+(1*2)=121
121 % 10 = 1
So 21994-32-1 is a valid CAS Registry Number.