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4-Pentyn-1-one, 1-phenyl-5-(trimethylsilyl)- is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

203056-65-9

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203056-65-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 203056-65-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,3,0,5 and 6 respectively; the second part has 2 digits, 6 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 203056-65:
(8*2)+(7*0)+(6*3)+(5*0)+(4*5)+(3*6)+(2*6)+(1*5)=89
89 % 10 = 9
So 203056-65-9 is a valid CAS Registry Number.

203056-65-9Relevant academic research and scientific papers

Gold(I)-Catalyzed Desymmetrization of 1,4-Dienes by an Enantioselective Tandem Alkoxylation/Claisen Rearrangement

Wu, Hongmiao,Zi, Weiwei,Li, Guigen,Lu, Hongjian,Toste, F. Dean

, p. 8529 - 8532 (2015)

An enantioselective alkoxylation/Claisen rearrangement reaction was achieved by a strategic desymmetrization of 1,4-dienes under the catalysis of (S)-DTBM-Segphos(AuCl)2/AgBF4. This reaction system was highly selective for the format

Direct furan formation by treatment of alkynyl ketones with strong potassium bases

MaGee, David I.,Leach, James D.,Setiadji, Santosa

, p. 2847 - 2856 (1999)

The reaction of keto-alkynes with strong potassium bases such as KOtBu, KHMDS or KH yields substituted furans in moderate to good yields without any special activation of the alkyne required. The method offers both a flexibility and rapid method for the s

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