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237081-53-7

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237081-53-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 237081-53-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,3,7,0,8 and 1 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 237081-53:
(8*2)+(7*3)+(6*7)+(5*0)+(4*8)+(3*1)+(2*5)+(1*3)=127
127 % 10 = 7
So 237081-53-7 is a valid CAS Registry Number.

237081-53-7Relevant articles and documents

Enzymatic hydration of (18O)epoxides. Role of nucleophilic mechanisms.

Hanzlik,Edelman,Michaely,Scott

, p. 1952 - 1955 (1976)

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Microbiological transformations. Part 48: Enantioselective biohydrolysis of 2-, 3- and 4-pyridyloxirane at high substrate concentration using the Agrobacterium radiobacter AD1 epoxide hydrolase and its Tyr215Phe mutant

Genzel,Archelas,Lutje Spelberg,Janssen,Furstoss

, p. 2775 - 2779 (2001)

The epoxide hydrolase (EH) from Agrobacterium radiobacter AD1 wild type (ArWT) and its Tyr215Phe mutant were compared for the biocatalyzed hydrolytic kinetic resolution (BHKR) of 2-, 3- and 4-pyridyloxirane. The regioselectivity of the oxirane ring opening as well as the substrate concentration limit and the inhibitory effect of the diol were determined. A gram scale preparation of enantiopure 2-pyridyloxirane (ee>98%) at a concentration as high as 127 mM (15.5 g/L) could be achieved with each of these two enzymes.

Organomagnesium Based Flash Chemistry: Continuous Flow Generation and Utilization of Halomethylmagnesium Intermediates

Von Keutz, Timo,Cantillo, David,Kappe, C. Oliver

supporting information, p. 7537 - 7541 (2020/10/12)

The generation of highly unstable chloromethylmagnesium chloride in a continuous flow reactor and its reaction with aldehydes and ketones is reported. With this strategy, chlorohydrins and epoxides were synthesized within a total residence time of only 2.6 s. The outcome of the reaction can be tuned by simply using either a basic or an acidic quench. Very good to excellent isolated yields, up to 97%, have been obtained for most cases (30 examples).

Azidolysis of epoxides catalysed by the halohydrin dehalogenase from Arthrobacter sp. AD2 and a mutant with enhanced enantioselectivity: an (S)-selective HHDH

Mikleu?evi?, Ana,Primo?i?, Ines,Hrenar, Tomica,Salopek-Sondi, Branka,Tang, Lixia,Elenkov, Maja Majeri?

, p. 930 - 935 (2016/09/13)

Halohydrin dehalogenase from Arthrobacter sp. AD2 catalysed azidolysis of epoxides with high regioselectivity and low to moderate (S)-enantioselectivity (E?=?1–16). Mutation of the asparagine 178 to alanine (N178A) showed increased enantioselectivity towards styrene oxide derivatives and glycidyl ethers. Conversion of aromatic epoxides was catalysed by HheA-N178A with complete enantioselectivity, however the regioselectivity was reduced. As a result of the enzyme-catalysed reaction, enantiomerically pure (S)-β-azido alcohols and (R)-α-azido alcohols (ee???99%) were obtained.

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