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4-methoxy-1-methyl-5-oxo-2-phenyl-2,5-dihydro-pyrrole-3-carboxylic acid ethyl ester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

55404-23-4

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55404-23-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 55404-23-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,5,4,0 and 4 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 55404-23:
(7*5)+(6*5)+(5*4)+(4*0)+(3*4)+(2*2)+(1*3)=104
104 % 10 = 4
So 55404-23-4 is a valid CAS Registry Number.

55404-23-4Downstream Products

55404-23-4Relevant academic research and scientific papers

SYNTHESIS OF 2,3-DIALKOXY-1H-PYRROLE VIA REDUCTION OF DIOXOPYRROLINE WITH SODIUM HYDROSULFITE

Sano, Takehiro,Seki, Masaharu,Toda, Jun,Tsuda, Yoshisuke

, p. 2541 - 2548 (2007/10/02)

Reduction of 1H-pyrrole-2,3-dione (3 and 7) with sodium hydrosulfite took place selectively in a 1,4-manner.Methylation of the product with diazomethane gave 1,5-dihydro-3-methoxy-2H-pyrrol-2-one (5 and 8) in good yield.Treatment of the methyl ether (5 or

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