280563-99-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 280563-99-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,8,0,5,6 and 3 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 280563-99:
(8*2)+(7*8)+(6*0)+(5*5)+(4*6)+(3*3)+(2*9)+(1*9)=157
157 % 10 = 7
So 280563-99-7 is a valid CAS Registry Number.