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306996-54-3

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306996-54-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 306996-54-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,0,6,9,9 and 6 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 306996-54:
(8*3)+(7*0)+(6*6)+(5*9)+(4*9)+(3*6)+(2*5)+(1*4)=173
173 % 10 = 3
So 306996-54-3 is a valid CAS Registry Number.

306996-54-3Downstream Products

306996-54-3Relevant articles and documents

Synthesis and reactions of some 2-Vinyl-3H-quinazolin-4-ones

Witt, Anette,Bergman, Jan

, p. 7245 - 7253 (2007/10/03)

A simple, high-yielding synthesis of 2-vinyl-3H-quinazolin-4-one, 2-(1-chlorovinyl)-3H-quinazolin-4-one and 2-(1-bromovinyl)-3H-quinazolin-4-one. The 2-vinylquinazolinones 11a and 14 participate readily in nucleophilic addition reactions. Treatment with both carbon and nitrogen nucleophiles results in a clean conversion into a variety of 2-substituted 3H-quinazolin-4-one derivatives. The 2-(1-halovinyl)-3H-quinazolin-4-ones 11b and 11c reacted with carbon nucleophiles to give several derivatives of 2-substituted 3H-quinazolin-4-one, such as dihydrofurancarboxylic ethyl ester 23. (C) 2000 Elsevier Science Ltd.

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