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200055-89-6

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200055-89-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 200055-89-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,0,0,5 and 5 respectively; the second part has 2 digits, 8 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 200055-89:
(8*2)+(7*0)+(6*0)+(5*0)+(4*5)+(3*5)+(2*8)+(1*9)=76
76 % 10 = 6
So 200055-89-6 is a valid CAS Registry Number.

200055-89-6SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 18, 2017

Revision Date: Aug 18, 2017

1.Identification

1.1 GHS Product identifier

Product name (2-oxochromen-4-yl) 4-methylbenzenesulfonate

1.2 Other means of identification

Product number -
Other names 4-tosylatecoumarin

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:200055-89-6 SDS

200055-89-6Relevant articles and documents

Enantioselective allene/enone photocycloadditions: The use of an inexpensive optically active 1,3-disubstituted allene

Shepard, Mary S.,Carreira, Erick M.

, p. 16253 - 16276 (1997)

We report the preparation and use of an inexpensive readily prepared optically active 1,3-disubstituted allene that may be utilized for enantioselective intramolecular allene/enone photocycloadditions. In addition, we describe novel substrates for intramo

Highly selective and sensitive coumarin–triazole-based fluorometric ‘turn-off’ sensor for detection of Pb2+ ions

Shaily,Kumar, Ajay,Parveen, Iram,Ahmed, Naseem

, p. 713 - 721 (2018)

Exposure to even very low concentrations of Pb2+ is known to cause cardiovascular, neurological, developmental, and reproductive disorders, and affects children in particular more severely. Consequently, much effort has been dedicated to the de

Transition metal- and oxidant-free sulfonylation of 1-sulfonyl-1H-1,2,3-triazoles to enols for the synthesis of sulfonate derivatives

He, Xinwei,Wu, Yuhao,Zuo, Youpeng,Xie, Mengqing,Li, Ruxue,Shang, Yongjia

supporting information, p. 959 - 972 (2019/03/14)

A novel and convenient protocol for the synthesis of sulfonate derivatives via DABCO-catalyzed direct sulfonylation of 1-sulfonyl-1,2,3-triazoles to different enols has been established. This synthetic route could effectively avoid the use of transition m

Palladium-Catalyzed Synthesis of Benzothiophenes via Cross-Dehydrogenative Coupling of 4-Arylthiocoumarins and Pyrones

Zhang, Jin,Zhuang, Yuyu,Ma, Yangmin,Yang, Xiufang,Szostak, Michal

supporting information, p. 5709 - 5714 (2019/11/21)

Benzothiophenes represent a pivotal class of sulfur heterocycles and their synthesis has attracted significant attention to generate bioactive scaffolds. Herein, we report a convergent, atom- and step-economic method for the synthesis benzothiophenes by cross-dehydrogenative coupling (CDC) of 4-arylthiocoumarins in good to excellent yields. We further demonstrate cross-dehydrogenative coupling of 4-arylthio-2-pyrones to afford alternative substitution of benzothiophenes. The presence of a labile ester carbonyl moiety provides functional handle for further functionalization by coumarin deconstruction. Most crucially, the manuscript demonstrates that the use of readily accessible templated synthesis has a significant potential for the rapid assembly of sulfur heterocycles by dehydrogenative coupling mechanism.

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