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83808-74-6

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83808-74-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 83808-74-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,3,8,0 and 8 respectively; the second part has 2 digits, 7 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 83808-74:
(7*8)+(6*3)+(5*8)+(4*0)+(3*8)+(2*7)+(1*4)=156
156 % 10 = 6
So 83808-74-6 is a valid CAS Registry Number.

83808-74-6Downstream Products

83808-74-6Relevant articles and documents

Pylcyclic Aromatic Compounds: Part VII - Synthesis of 1,3-Di-p-tolylcyclopentaceanthrylen-2(H)-one and Its Transformation with Ethylenic and Acetylenic Compounds to Polycyclics Containing Benzofluoranthene Nucleus

Bandyopadhyay, T. K.,Bhattacharya, A. J.

, p. 91 - 94 (2007/10/02)

Aceanthraquinone (I) undergoes condensation with 4,4'-dimethyldibenzyl ketone (II) to form a reactive diene, 1,3-di-p-tolylcyclopentaceanthrylen-2(H)-one (III) from which a number of polycyclic aromatic compounds (IV-X) containing a benzofluoranthene nucleus have been prepared by diene synthesis with dienophiles containing a reactive ethylenic or acetylenic bond.The dienophiles used are maleic anhydride, chloromaleic anhydride, acenaphthylene, 1-chloroacenaphthylene, indene, 3-chloroindene, bicyclohepta-2,5-diene, diphenylacetylene and benzyne.

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