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1418203-57-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1418203-57-2 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,4,1,8,2,0 and 3 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 1418203-57:
132 % 10 = 2
So 1418203-57-2 is a valid CAS Registry Number.

1418203-57-2Upstream product

1418203-57-2Relevant articles and documents

An expedient synthesis of 5-substituted imidazo[1,2-c]quinazolines

Korshin, Edward E.,Sabirova, Leila A.,Levin, Yakov A.

, p. 3512 - 3522 (2012)

An efficient three-step synthesis of 5-substituted 2,3-dihydroimidazo[1,2- c]quinazolines and imidazo[1,2-c]quinazolines was elaborated. 2-(2-Aminophenyl)-4,5-dihydro-1H-imidazole, prepared by phosphorus pentasulfide catalyzed condensation of 2-aminobenzonitrile with ethylenediamine, smoothly reacted with aldehydes to give the corresponding 2,3,5,6-tetrahydroimidazo[1,2- c]quinazolines. The CH-NH fragments of the latter were subjected to selective oxidative dehydrogenation with one equivalent of potassium permanganate on silica gel to give 2,3-dihydroimidazo[1,2-c]quinazolines. With two equivalents of potassium permanganate on silica gel, a one-pot exhaustive dehydrogenation to imidazo[1,2-c]quinazolines was accomplished. Georg Thieme Verlag KG · Stuttgart · New York.

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