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2-p-nitrophenyl-4-oxido-6,8-diphenylpyrido<2,1-f><1,2,4>triazin-9-ium is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

87522-16-5

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87522-16-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 87522-16-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,7,5,2 and 2 respectively; the second part has 2 digits, 1 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 87522-16:
(7*8)+(6*7)+(5*5)+(4*2)+(3*2)+(2*1)+(1*6)=145
145 % 10 = 5
So 87522-16-5 is a valid CAS Registry Number.

87522-16-5Upstream product

87522-16-5Downstream Products

87522-16-5Relevant academic research and scientific papers

Bridgehead Nitrogen Heterocycles. Synthesis of Triazolopyridin-1-ium and Pyridotriazin-9-ium Derivatives

Molina, Pedro,Tarraga, Alberto,Vilaplana, Maria Jesus,Hurtado, Emilia,Lorenzo, Mercedes

, p. 1395 - 1399 (1983)

A number of derivatives of brigehead nitrogen heterocycles from pyrylium salts and amidrazones have been prepared. 2-Methylthio-4,6-diphenylpyrylium tetrafluoroborate (13) reacts with N3-aryl substituted amidazones to yield derivatives of triazolopyridin-1-ium tetrafluoroborates . 2-Ethoxycarbonyl-4,6-diphenylpyrylium (14) reacts with N3-aryl substituted amidrazones to give 4-oxopyridotriazin-9-ium derivatives .Compound (14) also reacts under neutral conditions with unsubstituted amidrazones to yield the corresponding pyridinium salts ; these cyclised on treatment with base giving the zwitterionic 4-oxidopyridotriazin-9-ium compounds .

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