235-92-7 Usage
General Description
1H-Cyclopenta[l]phenanthrene, also known as 1,2-Benzophenanthrene, is a polycyclic aromatic hydrocarbon (PAH) with a molecular formula of C18H12. It is a member of the cyclopenta-fused polycyclic aromatic hydrocarbon family and is formed from the fusion of one cyclopentane ring and one phenanthrene ring. 1H-Cyclopenta[l]phenanthrene is a colorless crystalline compound that is insoluble in water and is primarily used in organic synthesis and as a starting material for the preparation of various pharmaceuticals and agrochemicals. It is considered to be a potential environmental pollutant and a carcinogenic compound due to its PAH nature and has been the subject of research in the field of toxicology and environmental chemistry.
Check Digit Verification of cas no
The CAS Registry Mumber 235-92-7 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 2,3 and 5 respectively; the second part has 2 digits, 9 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 235-92:
(5*2)+(4*3)+(3*5)+(2*9)+(1*2)=57
57 % 10 = 7
So 235-92-7 is a valid CAS Registry Number.
InChI:InChI=1/C17H12/c1-3-8-14-12(6-1)13-7-2-4-9-15(13)17-11-5-10-16(14)17/h1-10H,11H2
235-92-7Relevant articles and documents
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Garratt,P.J.,Knapp,K.A.
, p. 1215 - 1216 (1970)
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1H and 13C Nuclear Magnetic Resonance Reinvestigation of the Dibenzocyclononatetraenyl Anion and Its 5,9-Diphenyl Derivative. Planarity vs Nonplanarity
Eliasson, Bertil,Nouri-Sorkhabi, M. Hossein,Trogen, Lars,Sethson, Ingmar,Edlund, Ulf,et al.
, p. 171 - 175 (2007/10/02)
It is found that the dibenzocyclononatetraenyl anion is readily transformed into the stable 1H-cyclopentaphenanthren-1-yl anion.Earlier reported NMR data of this compound were incorrectly assigned to a planar structure of the dibenzocyclononatetraenyl anion.The nonplanarity of the initially formed nine-membered ring anion was confirmed both experimentally and theoretically.The ring-closure process does not take place in the anion of the 5,9-diphenyl derivative, which retains a nonplanar conformation of the nine-membered ring.
