1421916-01-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1421916-01-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,4,2,1,9,1 and 6 respectively; the second part has 2 digits, 0 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1421916-01:
(9*1)+(8*4)+(7*2)+(6*1)+(5*9)+(4*1)+(3*6)+(2*0)+(1*1)=129
129 % 10 = 9
So 1421916-01-9 is a valid CAS Registry Number.