1421849-18-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1421849-18-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,4,2,1,8,4 and 9 respectively; the second part has 2 digits, 1 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 1421849-18:
(9*1)+(8*4)+(7*2)+(6*1)+(5*8)+(4*4)+(3*9)+(2*1)+(1*8)=154
154 % 10 = 4
So 1421849-18-4 is a valid CAS Registry Number.