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5-phenyl-4-penten-2-yn-1-yl acetate is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

103240-57-9

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103240-57-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 103240-57-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,0,3,2,4 and 0 respectively; the second part has 2 digits, 5 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 103240-57:
(8*1)+(7*0)+(6*3)+(5*2)+(4*4)+(3*0)+(2*5)+(1*7)=69
69 % 10 = 9
So 103240-57-9 is a valid CAS Registry Number.

103240-57-9Downstream Products

103240-57-9Relevant academic research and scientific papers

Synthesis of alkylidenecyclopentenones and dialkylidenecyclopentenones via the coupling of propargylic alcohol and 2-alkyne-1,4-diol derivatives with cyclopropylcarbene-chromium complexes

Herndon, James W.,Zhu, Jin,Sampedro, Diego

, p. 4985 - 4993 (2007/10/03)

The coupling of propargylic alcohols and their derivatives with cyclopropylcarbene-chromium complexes has been investigated. The coupling reaction leads to alkylidenecyclopentenones or alkoxyalkyl-cyclopentenones, depending on the leaving group ability of

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