263393-90-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 263393-90-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,6,3,3,9 and 3 respectively; the second part has 2 digits, 9 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 263393-90:
(8*2)+(7*6)+(6*3)+(5*3)+(4*9)+(3*3)+(2*9)+(1*0)=154
154 % 10 = 4
So 263393-90-4 is a valid CAS Registry Number.