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709030-49-9

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709030-49-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 709030-49-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 7,0,9,0,3 and 0 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 709030-49:
(8*7)+(7*0)+(6*9)+(5*0)+(4*3)+(3*0)+(2*4)+(1*9)=139
139 % 10 = 9
So 709030-49-9 is a valid CAS Registry Number.

709030-49-9Downstream Products

709030-49-9Relevant articles and documents

The Synthesis of 8-Hydroxyquinazoline Derivatives and Their Acid-Base Interactions

Kudelko, Agnieszka,Zielinski, Wojciech

, p. 247 - 251 (2007/10/03)

The reaction of N-(2-R1-oxyphenyl)benzimidoyl chlorides with cyanamide derivatives in the presence of titanium tetrachloride as a catalyst has yielded some new 4-amino-8-R1-oxy-2-phenylquinazolines. pK a values have been determined for these compounds and the influence of substituents at the basicity of the parent system has been discussed. Some investigations on the methyl-quinazolinyl ether cleavage in different medium have been done yielding the appropriate hydroxyquinazoline derivatives. In those cases when the deprotection of 4-amino-8-methoxy-2-phenylquinazoline was carried in aqueous acidic solutions, the formation of the hydrolysis products 3,4-dihydro-2-phenyl-4-quinazolone derivatives was observed as well.

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