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194044-54-7

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194044-54-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 194044-54-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,4,0,4 and 4 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 194044-54:
(8*1)+(7*9)+(6*4)+(5*0)+(4*4)+(3*4)+(2*5)+(1*4)=137
137 % 10 = 7
So 194044-54-7 is a valid CAS Registry Number.

194044-54-7Downstream Products

194044-54-7Relevant articles and documents

Rapid Access to N-Protected Sulfonimidoyl Fluorides: Divergent Synthesis of Sulfonamides and Sulfonimidamides

Liu, Yongan,Pan, Qijun,Hu, Xiaojun,Guo, Yong,Chen, Qing-Yun,Liu, Chao

, p. 3975 - 3980 (2021/05/26)

Herein we report a practical and efficient copper-catalyzed approach for the conversion of various arenediazonium salts to the corresponding N-protected sulfonimidoyl fluorides. This operationally simple protocol tolerates a wide range of functional groups and can be applied to the late-stage modification of complex bioactive molecules. Furthermore, pharmaceutically important primary sulfonamides and sulfonimidamides derived from these valuable N-protected sulfonimidoyl fluoride units were prepared in minimal synthetic steps.

Nickel(II)-Catalyzed Addition of Aryl and Heteroaryl Boroxines to the Sulfinylamine Reagent TrNSO: The Catalytic Synthesis of Sulfinamides, Sulfonimidamides, and Primary Sulfonamides

Lo, Pui Kin Tony,Willis, Michael C.

, p. 15576 - 15581 (2021/10/02)

We report a redox-neutral Ni(II)-catalyzed addition of (hetero)aryl boroxines to N-sulfinyltritylamine (TrNSO). The reactions use a catalyst generated from the combination of commercial, air-stable NiCl2·(glyme) and a commercially available bipyridine lig

A CONTINUOUS FLOW MICRO-TOTAL PROCESS SYSTEM FOR PREPARATION OF CELECOXIB AND ANALOGS THEREOF

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Page/Page column 16-17, (2020/08/22)

The present invention relates to preparation of pyrazoles. This invention further relates to a continuous flow micro-total process system for preparation of celecoxib, a COX-2 selective non-steroidal anti-inflammatory drug, and analogs thereof.

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