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(7E,11Z,13E)-5-(2,5-Dimethylhexa-2,4-dienylidene)-3-<2-(2,6,6-trimethylcyclohex-1-enyl)vinyl>furan-2(5H)-one is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

128293-07-2

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128293-07-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 128293-07-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,8,2,9 and 3 respectively; the second part has 2 digits, 0 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 128293-07:
(8*1)+(7*2)+(6*8)+(5*2)+(4*9)+(3*3)+(2*0)+(1*7)=132
132 % 10 = 2
So 128293-07-2 is a valid CAS Registry Number.

128293-07-2Relevant academic research and scientific papers

Retinoids and Related Compounds. Part 14. A Novel Synthesis of Conjugated 4-Alkylidenebutenolides and Their Spectral Characterization

Ito, Masayoshi,Katsuta, Yuko,Yamano, Yumiko,Tsukida, Kiyoshi

, p. 987 - 994 (1993)

A novel synthesis (the sulfone method) of carotenoidal alkylidenebutenolides is described together with spectral characterization of the latter.

Synthesis of the 4-Alkylidenebutenolide Carotenoids, Peridinin and Pyrrhoxanthin

Masayoshi, Ito,Hirata, Yumiko,Shibata, Yuko,Tsukida, Kiyoshi

, p. 197 - 199 (2007/10/02)

A novel synthetic method of carotenoidal alkylidenebutenolides has been developed, and applied to the first synthesis of peridinin (1) and pyrrhoxanthin (2).

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