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875557-13-4

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875557-13-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 875557-13-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,7,5,5,5 and 7 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 875557-13:
(8*8)+(7*7)+(6*5)+(5*5)+(4*5)+(3*7)+(2*1)+(1*3)=214
214 % 10 = 4
So 875557-13-4 is a valid CAS Registry Number.

875557-13-4Relevant articles and documents

Synthesis, characterization and biological activity of 1,3,4-substituted 2-azetidinones

Pandey,Gupta,Upadhyay, Mrinalini,Upadhyay, Mridula,Singh,Tandon, Meenal

, p. 158 - 162 (2007/10/03)

Amido/imido alcohol/2-phenyl-3-hydroxyethylquinazolin-4 (3H) -one 1 on treatment with benzoic acid in the presence of cone. H2SO4 yields m-(aralkylamido/imidoalkyl/2-phenyl-3-ethyl-3H-4-oxoquinazolinyl) benzoic acids 2. The acid chloride of 2 on reaction with hydrazine hydrate affords m-(aralkylamido/imidoalkyl/2-phenyl-3-ethyl-3H-4-oxo-quinazolinyl) benzoic acid hydrazides 4 which on condensation with an aromatic aldehyde in acetic acid gives m-(aralkylamido/imidoalkyl/2-phenyl-3-ethyl-3H-4-oxo- quinazolinyl) benzoic acid hydrazones 5. Compounds 5 undergo cyclization with phenoxy acetic acid in the presence of thionyl chloride in dry benzene to furnish 1-[m-(aralkylamido/imidoalkyl/2-phenyl-3-ethyl-3H-4-oxo-quinazolinyl- benzamido)]-3-phenoxy-4-phenyl-2-azetidinones 6. The antiviral and antifungal activities of 6 have been reported.

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