1421869-89-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1421869-89-7 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,4,2,1,8,6 and 9 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1421869-89:
(9*1)+(8*4)+(7*2)+(6*1)+(5*8)+(4*6)+(3*9)+(2*8)+(1*9)=177
177 % 10 = 7
So 1421869-89-7 is a valid CAS Registry Number.