1421869-77-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1421869-77-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,4,2,1,8,6 and 9 respectively; the second part has 2 digits, 7 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1421869-77:
(9*1)+(8*4)+(7*2)+(6*1)+(5*8)+(4*6)+(3*9)+(2*7)+(1*7)=173
173 % 10 = 3
So 1421869-77-3 is a valid CAS Registry Number.