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2,5-bis(phenylthio)-3,4-dihydro-2-(1-hydroxyethyl)-6-methyl-2H-pyran is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

19718-59-3

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19718-59-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 19718-59-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,7,1 and 8 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 19718-59:
(7*1)+(6*9)+(5*7)+(4*1)+(3*8)+(2*5)+(1*9)=143
143 % 10 = 3
So 19718-59-3 is a valid CAS Registry Number.

19718-59-3Relevant academic research and scientific papers

Cycloaddition Reactions of 3-(Phenylthio)-3-buten-2-one: Synthesis of Functionalized Dihydropyran Derivatives and Their Ring-Opening Reactions

Takaki, Ken,Yamada, Michio,Negoro, Kenji

, p. 5246 - 5250 (2007/10/02)

3-(Phenylthio)-3-buten-2-one (1) reacted with nucleophilic olefins such as vinyl ethers, vinyl sulfide, and enamine to give 1,4-cycloaddition products and/or Michael adducts 7-17 in fairly good yields.Treatment of 2-acetyl-2,5-bis(phenylthio)-3,4-dihydro-6-methyl-2H-pyran (2) with various acids or mercury(II) chloride gave the cyclopentanone 19.In addition, the dimer 2 was converted into 3-(phenylthio)-7-octene-2,6-dione (23) by the three steps.

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