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565434-38-0

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565434-38-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 565434-38-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,6,5,4,3 and 4 respectively; the second part has 2 digits, 3 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 565434-38:
(8*5)+(7*6)+(6*5)+(5*4)+(4*3)+(3*4)+(2*3)+(1*8)=170
170 % 10 = 0
So 565434-38-0 is a valid CAS Registry Number.

565434-38-0Relevant articles and documents

Bioactive butenolides from Streptomyces antibioticus Tü 99: Absolute configurations and synthesis of analogs

Grossmann, Gilles,Poncioni, Marc,Bornand, Marc,Jolivet, Beno?t,Neuburger, Markus,Séquin, Urs

, p. 3237 - 3251 (2007/10/03)

The four furanones (butenolides) 1-4, which had been isolated from the fermentation broth of Streptomyces antibioticus Tü 99 and in preliminary tests had been shown to be biologically active, were synthesized by reaction of the readily available furanones 9 or 16 with 2-methylpropanal or 2-methylbutanal. In addition, a series of analogs was prepared in a similar way from 16 using different aldehydes. The hitherto unknown absolute configurations of the natural products 1-4 as well as those of all the analogs prepared were determined with Mosher's NMR method and/or X-ray crystallography. Some of the compounds synthesized proved to be active in the quorum sensing system of Chromobacterium violaceum.

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