263389-99-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 263389-99-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,6,3,3,8 and 9 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 263389-99:
(8*2)+(7*6)+(6*3)+(5*3)+(4*8)+(3*9)+(2*9)+(1*9)=177
177 % 10 = 7
So 263389-99-7 is a valid CAS Registry Number.