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Pyrazolo[1,5-a]quinazoline-9a(9H)-carbonitrile, 6-(acetyloxy)-2,5-diamino-7,8-dichloro-3-[(4-methylphenyl)azo]-9-oxo- is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

143571-55-5

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143571-55-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 143571-55-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,3,5,7 and 1 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 143571-55:
(8*1)+(7*4)+(6*3)+(5*5)+(4*7)+(3*1)+(2*5)+(1*5)=125
125 % 10 = 5
So 143571-55-5 is a valid CAS Registry Number.

143571-55-5Downstream Products

143571-55-5Relevant academic research and scientific papers

3-Amino-4-arylazopyrazoles: CT complexation and a novel synthesis of pyrazolo[2,3-a]quinazolines

Ibrahim,Hassan,Mohamed,Mourad

, p. 389 - 392 (1992)

3,5-Diamino-4-arylazopyrazoles 1a-d form charge-transfer (CT) complexes with chloranil (CHL), fluoranil (TFQ) and react with 2,3-dicyano-5,6-dichlorobenzoquinone (DDQ) to yield pyrazolo[2,3-a]quinazoline derivatives 4. 5-Amino-3-phenyl-4-arylazopyrazole 2a-d form CT-complexes only with DDQ.

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