42869-90-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 42869-90-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,2,8,6 and 9 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 42869-90:
(7*4)+(6*2)+(5*8)+(4*6)+(3*9)+(2*9)+(1*0)=149
149 % 10 = 9
So 42869-90-9 is a valid CAS Registry Number.