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2H-Pyran-5-carboxylic acid, 6-methyl-2-oxo-4-phenyl-, ethyl ester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

133900-69-3

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133900-69-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 133900-69-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,3,9,0 and 0 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 133900-69:
(8*1)+(7*3)+(6*3)+(5*9)+(4*0)+(3*0)+(2*6)+(1*9)=113
113 % 10 = 3
So 133900-69-3 is a valid CAS Registry Number.

133900-69-3Relevant academic research and scientific papers

Synthesis of polysubstituted α-pyrones using zinc-catalyzed addition-cyclization reactions

Liu, Wei-Bing,Chen, Cui,Zhang, Qing,Zhu, Zhi-Bo

, p. 1541 - 1544 (2015/04/27)

Various polysubstituted α-pyrone derivatives have been directly synthesized via a hydroalkylation of Michael additional reaction following a cyclized process catalyzed by the Lewis acid of Zn(OAc)2. This protocol provides a new convenient and s

Hydroalkylation leading to heterocyclic compounds. Part 1: New strategies for the synthesis of polysubstituted 2H-pyran-2-ones

Liu, Wei-Bing,Jiang, Huan-Feng,Qiao, Chun-Li

experimental part, p. 2110 - 2115 (2009/07/11)

Polysubstituted 2H-pyran-2-ones and 5,6-dihydro-2H-pyran-2-ones were synthesized via the MCRs initiated by the hydroalkylation of alkynoates with activated methylenes. Under the optimized reaction conditions, the desired products were obtained in 47-88% i

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