27303-83-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 27303-83-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,7,3,0 and 3 respectively; the second part has 2 digits, 8 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 27303-83:
(7*2)+(6*7)+(5*3)+(4*0)+(3*3)+(2*8)+(1*3)=99
99 % 10 = 9
So 27303-83-9 is a valid CAS Registry Number.