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75052-57-2

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75052-57-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 75052-57-2 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,5,0,5 and 2 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 75052-57:
(7*7)+(6*5)+(5*0)+(4*5)+(3*2)+(2*5)+(1*7)=122
122 % 10 = 2
So 75052-57-2 is a valid CAS Registry Number.

75052-57-2Relevant articles and documents

Method and catalyst for preparing thiazolo [3, 2-alpha] pyridine derivatives

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Paragraph 0037; 0038; 0039, (2017/07/20)

The invention discloses a method and a catalyst for preparing thiazolo [3, 2-alpha] pyridine derivatives, and belongs to the technical field of organic chemical industry. Magnetic material loaded alkaline ionic liquid is used as the catalyst, a molar ratio of aromatic aldehyde to active methylene compounds to methyl thioglycolate in preparation reaction is 2:(2-2.5):1, the molar weight, which is computed on the basis of alkaline ionic liquid on load, of the magnetic material loaded alkaline ionic liquid, which is the catalyst, is 8-12% of the molar weight of the methyl thioglycolate, and the reflux reaction time is 17-67 min. Compared with other preparation methods, the method and the catalyst have the advantages that the catalyst is low in loss during recycling and is high in recyclable times and product selectivity, integral preparation procedures are simple, convenient and economical, and accordingly industrial large-scale production can be facilitated.

Synthesis of ethoxyphthalimido derivatized thiazolodihydropyridines assembled with pyrazole and isoxazole systems from common intermediate chalcone and evaluation of their antibacterial activity

Pemawat, Gangotri,Talesara, Ganpat L.

experimental part, p. 1173 - 1180 (2011/10/13)

Condensation of aromatic aldehydes, malononitrile and thioglycolic acid gives 5-amino-3-oxo-7-substitutedphenyl-2-substitutedarylidene-2,3-dihydro-7H- [1,3]thiazolo[3,2-a] pyridine-6,8-dicarbonitrile 1a-e. This acts as key intermediate for two series of f

THE REACTION OF THIOGLYCOLIC ACID WITH α,β-UNSATURATED NITRILES: A NEW ROUTE FOR THE SYNTHESIS OF THIAZOLOPYRIDINES

Elnagdi, Mohamed Hilmy,Elmoghayar, Mohamed Rifat Hamza,Elghandour, Ahmed Hafez Hussein,Sadek, Kamal Usef

, p. 745 - 751 (2007/10/02)

The reaction of cinnamonitriles with thioglycolic acid in the presence of a basic catalyst affords thiazolopyridine derivatives.

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