1421933-23-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1421933-23-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,4,2,1,9,3 and 3 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1421933-23:
(9*1)+(8*4)+(7*2)+(6*1)+(5*9)+(4*3)+(3*3)+(2*2)+(1*3)=134
134 % 10 = 4
So 1421933-23-4 is a valid CAS Registry Number.