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80263-47-4

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80263-47-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 80263-47-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,0,2,6 and 3 respectively; the second part has 2 digits, 4 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 80263-47:
(7*8)+(6*0)+(5*2)+(4*6)+(3*3)+(2*4)+(1*7)=114
114 % 10 = 4
So 80263-47-4 is a valid CAS Registry Number.

80263-47-4Relevant articles and documents

Novel Synthesis of the Mesoionic System 1,3-Oxazolium-4-olate

Haddadin, Makhluf J.,Kattan, Asma M.,Freeman, Jeremiah P.

, p. 723 - 725 (1982)

Thermolysis or photolysis of N-phenyldibenzoylnitrone (1) produces N-benzoylphenylglyoxanilide (5) and not the previously reported oxaziridine 2.Treatment of imide 5 with triethyl phosphite produced 2,3,5-triphenyl-1,3-oxazolium-4-olate (8), a new member

PHOTOCHEMICAL AND THERMAL REACTIONS OF HETEROCYCLES. IV. PHOTO-OXIDATION REACTIONS OF MESOIONIC DITHIOLIUMOLATE, THIAZOLIUMOLATE, AND RELATED HETEROCYCLES. SOLVENT EFFECTS ON THE COURSE OF THE PHOTO-OXIDATION

Kato, Hiroshi,Tani, Kazue,Kurumisawa, Haruki,Tamura, Yoshiko

, p. 1313 - 1322 (2007/10/02)

Photo-oxidation of mesoionic 1,3-dithiolium-4-olates (1) gave diacyl disulfide (2), and that of a mesoionic thiazolium-4-olate (6) and oxazolium-5-olate (9) gave diacylamides as the main products.The formation of these products was rationalized by a route involving fragmentation of the corresponding endoperoxides, which are formed by cycloaddition of singlet oxygen on the mesoionic rings.Photo-oxidation of 5(4H)-oxazolones (12) and a 5(4H)-thiazolone (17) in dichloromethane gave the corresponding dehydro-dimers, while that of the former in dimethylformamide gave mainly diacylamides.The acylamides were considered to arise via the endoperoxides of the mesoionic tautomers.

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