280766-72-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 280766-72-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,8,0,7,6 and 6 respectively; the second part has 2 digits, 7 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 280766-72:
(8*2)+(7*8)+(6*0)+(5*7)+(4*6)+(3*6)+(2*7)+(1*2)=165
165 % 10 = 5
So 280766-72-5 is a valid CAS Registry Number.