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180694-43-3

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180694-43-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 180694-43-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,8,0,6,9 and 4 respectively; the second part has 2 digits, 4 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 180694-43:
(8*1)+(7*8)+(6*0)+(5*6)+(4*9)+(3*4)+(2*4)+(1*3)=153
153 % 10 = 3
So 180694-43-3 is a valid CAS Registry Number.

180694-43-3Downstream Products

180694-43-3Relevant articles and documents

Cis-trans isomerization of a cyclopropyl radical trap catalyzed by extradiol catechol dioxygenases: Evidence for a semiquinone intermediate

Spence, Emma L.,Langley, G. John,Bugg, Timothy D. H.

, p. 8336 - 8343 (2007/10/03)

Substrate analogues cis- and trans-2-(2,3-dihydroxyphenyl)cyclopropane-1-carboxylic acid were synthesized as probes for a semiquinone radical intermediate in the (2,3-dihydroxyphenyl)propionate 1,2-dioxygenase reaction. These analogues were found to be substrates for oxidative cleavage by extradiol dioxygenases from Escherichia coli and Alcaligenes eutrophus. The stereochemistry of the ring fission products was analyzed by conversion to cyclopropane-1,2-dicarboxylic acids using the ensuing hydrolase enzyme MhpC, followed by GCMS analysis. This analysis revealed 85-94% trans product and 6-15% cis products, implying that cis/trans isomerization of the cyclopropyl ring substituents had taken place during the enzymatic conversion. These results are consistent with a reversible opening of the cyclopropyl ring, and hence consistent with the intermediacy of a semiquinone radical intermediate in the extradiol catechol dioxygenase reaction.

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