82520-40-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 82520-40-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,2,5,2 and 0 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 82520-40:
(7*8)+(6*2)+(5*5)+(4*2)+(3*0)+(2*4)+(1*0)=109
109 % 10 = 9
So 82520-40-9 is a valid CAS Registry Number.
InChI:InChI=1/C15H13ClO/c1-2-11-7-9-12(10-8-11)15(17)13-5-3-4-6-14(13)16/h3-10H,2H2,1H3