196-42-9 Usage
Uses
Naphtho[2,3-a]pyrene is a polycyclic aromatic hydrocarbon and have been investigated for environmental effects, carcinogenicity and potential as a human cell mutagen.
Check Digit Verification of cas no
The CAS Registry Mumber 196-42-9 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 1,9 and 6 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 196-42:
(5*1)+(4*9)+(3*6)+(2*4)+(1*2)=69
69 % 10 = 9
So 196-42-9 is a valid CAS Registry Number.
InChI:InChI=1/C24H14/c1-2-5-18-14-22-20(12-17(18)4-1)13-19-9-8-15-6-3-7-16-10-11-21(22)24(19)23(15)16/h1-14H
196-42-9Relevant articles and documents
Synthesis of annulated arenes and heteroarenes by hydriodic acid and red phosphorus mediated reductive cyclization of 2-(Hetero)aroylbenzoic acids or 3-(Hetero)arylphthalides
Rafiq, Settu Muhamad,Mohanakrishnan, Arasambattu K.
supporting information, p. 362 - 370 (2017/02/10)
Annulated arenes and hetarenes were prepared in good to very good yields by hydriodic acid/red phosphorus mediated reductive cyclization of 3-(hetero)aryl phthalides. The reductive cyclization also proceeded successfully with 2-aroylbenzoic acids and 2-aroylnaphthoic acids.
