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2-Butynoic acid, 4-hydroxy-4-(3,4,5-trimethoxyphenyl)-, ethyl ester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

118741-50-7

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118741-50-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 118741-50-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,8,7,4 and 1 respectively; the second part has 2 digits, 5 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 118741-50:
(8*1)+(7*1)+(6*8)+(5*7)+(4*4)+(3*1)+(2*5)+(1*0)=127
127 % 10 = 7
So 118741-50-7 is a valid CAS Registry Number.

118741-50-7Relevant academic research and scientific papers

Rhenium-catalyzed aromatic propargylation

Kennedy-Smith, Joshua J.,Young, Lauren A.,Toste, F. Dean

, p. 1325 - 1327 (2007/10/03)

A mild aromatic propargylation reaction, employing an air- and moisture-tolerant rhenium-oxo complex ((dppm)ReOCl3) as a catalyst and a propargyl alcohol as the electrophile, is described. The reaction tolerates a broad range of functional groups and regioselectively affords propargylic arenas without formation of the isomeric allenyl adducts. The potential of this rhenium(V)-catalyzed reaction is exemplified by application of the propargylation to the synthesis of O-methyldetrol, mimosifoliol, and β-apopicropodophyllin.

Propiolophenone derivatives

-

, (2008/06/13)

Propiolophenone derivatives of the formula STR1 wherein R6 is hydrogen, lower alkyl or a group of the formula STR2 as well as corresponding hydroxy compounds of the formula STR3 wherein R6' is hydrogen, lower alkyl, a group of formula (a), (b), (c), (d) or (e) or a group of the formula exhibit mucosa-protective and/or gastric acid secretion-inhibiting properties, such that they can be used for the control or prevention of illnesses of the gastrointestinal tract, especially against gastric ulcers and/or duodenal ulcers.

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