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88730-41-0

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88730-41-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 88730-41-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,8,7,3 and 0 respectively; the second part has 2 digits, 4 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 88730-41:
(7*8)+(6*8)+(5*7)+(4*3)+(3*0)+(2*4)+(1*1)=160
160 % 10 = 0
So 88730-41-0 is a valid CAS Registry Number.

88730-41-0Relevant articles and documents

Transketolase Catalyzed Synthesis of N-Aryl Hydroxamic Acids

Fúster Fernández, Inés,Hecquet, Laurence,Fessner, Wolf-Dieter

supporting information, p. 612 - 621 (2021/12/08)

Hydroxamic acids are metal-chelating compounds that show important biological activity including anti-tumor effects. We have recently engineered the transketolase from Geobacillus stearothermopilus (TKgst) to convert benzaldehyde as a non-natur

Rhodium(III)-catalyzed internal oxidative coupling of N-hydroxyanilides with alkenes via C-H activation

Wen, Jing,Wu, An,Chen, Pei,Zhu, Jin

supporting information, p. 5282 - 5286 (2015/08/26)

Abstract Described herein is an efficient new method for ortho-olefination of anilides in the presence of AgSbF6 and NaOAc via rhodium(III)-catalyzed internal oxidative C-H bond activation based on hydroxyl as directing and oxidative group. A range of alkenes and functional groups on acetanilides is supported and a possible mechanism is proposed according to the experimental results.

N-Arylhydroxamic Acids: Reaction of Nitroso Aromatics with α-Oxo Acids

Sakamoto, Yasuko,Yoshioka, Tadao,Uematsu, Takayoshi

, p. 4449 - 4453 (2007/10/02)

A practical and high-yielding route to N-arylhydroxamic acids from nitroso aromatics and α-oxo acids 1a-d is desctibed.In aqueous and acetic acid containing media, the reactions exhibit second-order reaction kinetics overall.In the aqueous medium, the rate constant (kobsd) for N-phenylacetohydroxamic acid (8b) formation increased with increasing +>, though there were some side pathways involving azoxybenzene formation.In general, kobsd for the reaction in the acetic acid containing medium was about one-tenth of that in HCl at pH 0.6.On a preparative scale, acetic acid is better than HCl, in that both reactants showed sufficient solubilities in acetic acid for a high reaction velocity and no side reaction was detected.With this method, the proximate carcinogens, N-(4-biphenylyl)acetohydroxamic acid (12b) and N-(2-fluorenyl)acetohydroxamic acid (13b), could be easily prepared.Under both conditions, the order of kobsd for the reactions of nitrosobenzene (2) with α-oxo acids 1a-d was glyoxylic (1a) > pyruvic (1b) 2-oxobutyric (1c) > benzoylformic (1d) acid.For the reactions of substituted nitrosobenzenes 3-6 with pyruvic acid (1b), the order of kobsd was p-phenyl (6) > unsubstituted (2) > p-chloro (5) > m-chloro (4) >> o-chloro (3) nitrosobenzene.The negative Hammett reaction constant value obtained indicates that an electron-donating substituent is preferable for the reaction.The reaction mechanism and other factors affecting N-arylhydroxamic acid formation are also descussed.

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