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152532-13-3

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152532-13-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 152532-13-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,2,5,3 and 2 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 152532-13:
(8*1)+(7*5)+(6*2)+(5*5)+(4*3)+(3*2)+(2*1)+(1*3)=103
103 % 10 = 3
So 152532-13-3 is a valid CAS Registry Number.

152532-13-3Relevant articles and documents

Efficient regioselective heterocyclisation leading to fluorescent fused pyrazine derivatives

Ostrowska, Katarzyna,Szymoniak, Katarzyna,Szczurek, Magdalena,Jamrozy, Krzysztof,Ra?pa?a-Kozik, Maria

experimental part, p. 5219 - 5227 (2011/07/31)

The regioselective syntheses of substituted pyrrolo[2,3-b]quinoxaline, pyrido[2,3-b]pyrrolo[2,3-e]pyrazine, pyrido[2,3-b]pyrrolo[3,2-e]pyrazine and pyrido[3,4-b]pyrrolo[3,2-e]pyrazine are reported. Differential reactivity between two amino groups in ortho-diaminopyridine can be exploited to obtain new regio-defined unsymmetrical pyridopyrrolopyrazine derivatives. Weak electron-donating methyl or moderately electron-withdrawing carboxylic groups attached to the aromatic ortho-diamines reduce the regioselectivity of obtaining unsymmetrical substituted pyrrolo[2,3-b]quinoxaline. The fluorescence properties of the resultant 1-alkyl pyridopyrrolopyrazine and substituted pyrrolo[2,3-b]quinoxaline derivatives are presented.

SYNTHESIS OF 2(1H)-QUINOLINONEQUINONES AND 2-ALKOXYQUINOLINEQUINONES USING OXIDATIVE DEMETHYLATION WITH CERIUM (IV) AMMONIUM NITRATE

Kitahara, Yoshiyasu,Nakahara, Shinsuke,Shimizu, Masaro,Yonezawa, Takanobu,Kubo, Akinori

, p. 1909 - 1924 (2007/10/02)

2,5,8(1H)-Quinolinetriones (12), 2,5,6(1H)-quinolinetriones (13), 2-alkoxy-5,8-quinolinediones (14), 2,8-dimethoxy-5,6-quinolinedione (15), and 2,6-dimethoxy-7,8-quinolinediones (16) were synthesized by oxidative demethylation of the corresponding 2(1H)-q

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