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78460-76-1

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78460-76-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 78460-76-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,8,4,6 and 0 respectively; the second part has 2 digits, 7 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 78460-76:
(7*7)+(6*8)+(5*4)+(4*6)+(3*0)+(2*7)+(1*6)=161
161 % 10 = 1
So 78460-76-1 is a valid CAS Registry Number.

78460-76-1Relevant articles and documents

Synthesis of 5H-Benzoxazoloquinazolin-5-ones

Kim, Dong Han

, p. 287 - 291 (2007/10/02)

5H-Benzoxazoloquinazolin-5-ones (Xa-d) were synthesized in excellent yields from N-(2-hydroxyphenyl)anthranilic acids (Ia-d) and cyanogen bromide.The synthesis was based on the mechanistic consideration of the reactions of salicylic acid with cyanogen bromide previously reported in the literature.A versatile alternative route to these novel heterocyclic compounds was through thermal cyclization of N-(2-benzoxazolyl)-2-fluorobenzamides (XIII) obtained by reacting 2-fluorobenzoyl chloride with 2-aminobenzoxazoles.The reaction of Xb with ethanol in the presence of potassium hydroxide gave an ethoxyquinazolinone (XVII).Similarly, the alkaline hydrolysis of Xb afforded an quinazolindione (XVIII).

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