1421851-91-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1421851-91-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,4,2,1,8,5 and 1 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1421851-91:
(9*1)+(8*4)+(7*2)+(6*1)+(5*8)+(4*5)+(3*1)+(2*9)+(1*1)=143
143 % 10 = 3
So 1421851-91-3 is a valid CAS Registry Number.