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170798-94-4

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170798-94-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 170798-94-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,0,7,9 and 8 respectively; the second part has 2 digits, 9 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 170798-94:
(8*1)+(7*7)+(6*0)+(5*7)+(4*9)+(3*8)+(2*9)+(1*4)=174
174 % 10 = 4
So 170798-94-4 is a valid CAS Registry Number.

170798-94-4Relevant articles and documents

Regio-selective hydroxylation of gem-difluorinated octanes by alkane hydroxylase (AlkB)

Ramu, Ravirala,Chang, Chun-Wei,Chou, Ho-Husan,Wu, Li-Lan,Chiang, Chih-Hsiang,Yu, Steve S.-F.

supporting information; experimental part, p. 2950 - 2953 (2011/06/23)

gem-Difluoromethylene substituted molecules constitute a distinct class of fluorinated compounds. In this study, special chemistry has been developed for their preparation based on the highly selective terminal hydroxylation of these gem-difluorinated oct

18F-labeled octanoates as potential agents for cerebral fatty acid studies. The influence of 4-substitution and the fluorine position on biodistribution.

Nagatsugi,Inoue,Sasaki,Maeda

, p. 607 - 615 (2007/10/02)

In order to understand the structural features that might lead to an in vivo radiotracer for studying cerebral fatty acid metabolism, 8-[18F]fluorooctanoate derivatives with methyl or gem-dimethyl branching at the C4 position have been prepared. 3-[18F]Fluoro- and 4-[18F]fluorooctanoic acid have also been synthesized for studying the influence of the fluorine position on the in vivo behavior of 18F-labeled octanoic acid analogs. Radiochemical synthesis was achieved by the nucleophilic displacement of a tosylate or mesylate precursor with [18F]fluoride ion. Tissue distribution studies in rats showed low cerebral uptakes of these 18F-labeled fatty acid analogs with poor brain-to-blood ratios. 3-[18F]Fluorooctanoic acid showed considerable defluorination, evident as a high bone activity level. The initial uptake of activity in the brain after injection of ethyl 8-[18F]fluoro-4-methyloctanoate and 4-[18F]-fluorooctanoic acid remained virtually unchanged over an extended time period, similar to that previously observed for the unbranched analogs, ethyl 8-[18F]fluorooctanoate and its free acid. In contrast, the 4-gem-dimethyl branched analog was rapidly and preferentially taken up by the liver. It was shown in the metabolite analysis that labeled metabolites produced from 8-[18F]fluoro-4-methyloctanoic acid were found in blood, and that they could enter the brain to a significant degree. Thus, the present studies showed that radioactivity retention in the brain in the case of the 4-methyl branched analog was mainly attributable to its radioactive metabolites.

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