23840-43-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 23840-43-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,3,8,4 and 0 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 23840-43:
(7*2)+(6*3)+(5*8)+(4*4)+(3*0)+(2*4)+(1*3)=99
99 % 10 = 9
So 23840-43-9 is a valid CAS Registry Number.
InChI:InChI=1/C18H13BrO2/c19-14-6-4-9-16(12-14)21-18-11-5-10-17(13-18)20-15-7-2-1-3-8-15/h1-13H
23840-43-9Relevant articles and documents
POLYCYCLIC AROMATIC COMPOUND AND LIGHT EMISSION LAYER-FORMING COMPOSITION
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, (2018/04/18)
The objective of the invention is to provide a polycyclic aromatic compound in which solubility to a solvent, film formability, wet coatability, thermal stability, and in-plane orientation are improved. This objective is achieved by a light emission layer