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2-methoxycarbonyl-1,1,1-triphenyl-4-phenylamino-4-aza-1-phosphabuta-1,3-diene is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

257281-30-4

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257281-30-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 257281-30-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,7,2,8 and 1 respectively; the second part has 2 digits, 3 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 257281-30:
(8*2)+(7*5)+(6*7)+(5*2)+(4*8)+(3*1)+(2*3)+(1*0)=144
144 % 10 = 4
So 257281-30-4 is a valid CAS Registry Number.

257281-30-4Relevant academic research and scientific papers

A regioselective synthesis of 5-pyrazolones and pyrazoles from phosphazenes derived from hydrazines and acetylenic esters

Palacios, Francisco,Ochoa De Retana, Ana M.,Pagalday, Jaione

, p. 14451 - 14458 (1999)

Efficient and regioselective syntheses of 1-phenyl-5-pyrazolones substituted with a phosphoranylidene group in the 3-position and of 3- alkoxycarbonyl-5-methoxy-1-phenyl pyrazoles are described. The key step is the formation of functionalized hydrazones b

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