263241-28-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 263241-28-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,6,3,2,4 and 1 respectively; the second part has 2 digits, 2 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 263241-28:
(8*2)+(7*6)+(6*3)+(5*2)+(4*4)+(3*1)+(2*2)+(1*8)=117
117 % 10 = 7
So 263241-28-7 is a valid CAS Registry Number.