2763-89-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 2763-89-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,7,6 and 3 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 2763-89:
(6*2)+(5*7)+(4*6)+(3*3)+(2*8)+(1*9)=105
105 % 10 = 5
So 2763-89-5 is a valid CAS Registry Number.