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122023-36-3

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122023-36-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 122023-36-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,2,0,2 and 3 respectively; the second part has 2 digits, 3 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 122023-36:
(8*1)+(7*2)+(6*2)+(5*0)+(4*2)+(3*3)+(2*3)+(1*6)=63
63 % 10 = 3
So 122023-36-3 is a valid CAS Registry Number.

122023-36-3Relevant articles and documents

Ketone Synthesis from Benzyldiboronates and Esters: Leveraging α-Boryl Carbanions for Carbon-Carbon Bond Formation

Lee, Boran,Chirik, Paul J.

, p. 2429 - 2437 (2020/03/03)

An alkoxide-promoted method for the synthesis of ketones from readily available esters and benzyldiboronates is described. The synthetic method is compatible with a host of sterically differentiated alkyl groups, alkenes, acidic protons α to carbonyl groups, tertiary amides, and aryl rings having common organic functional groups. With esters bearing α-stereocenters, high enantiomeric excess was maintained during ketone formation, establishing minimal competing racemization by deprotonation. Monitoring the reaction between benzyldiboronate and LiOtBu in THF at 23 °C allowed for the identification of products arising from deborylation to form an α-boryl carbanion, deprotonation, and alkoxide addition to form an "-ate" complex. Addition of 4-trifluoromethylbenzoate to this mixture established the α-boryl carbanion as the intermediate responsible for C-C bond formation and ultimately ketone synthesis. Elucidation of the role of this intermediate leveraged additional bond-forming chemistry and enabled the one-pot synthesis of ketones with α-halogen atoms and quaternary centers with four-different carbon substituents.

UREIDE DERIVATIVE AND USE THEREOF FOR MEDICAL PURPOSES

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Page/Page column 46, (2009/01/24)

This invention relates to a pharmaceutical comprising, as an active ingredient, a ureide derivative represented by formula: or a pharmaceutically acceptable salt thereof. The ureide derivative or a pharmaceutically acceptable salt thereof according to the present invention is useful for relieving pain and treating or preventing neuropathic pain.

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