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6,8-dichloro-3-(2-tosylethynyl)-2H-chromen-2-one is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

1321621-75-3

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1321621-75-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1321621-75-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,2,1,6,2 and 1 respectively; the second part has 2 digits, 7 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 1321621-75:
(9*1)+(8*3)+(7*2)+(6*1)+(5*6)+(4*2)+(3*1)+(2*7)+(1*5)=113
113 % 10 = 3
So 1321621-75-3 is a valid CAS Registry Number.

1321621-75-3Downstream Products

1321621-75-3Relevant academic research and scientific papers

Simple strategy for sulfonyl ethynylogs of coumarins

Guravaiah, Nalajam,Rao, Vedula Rajeswar

, p. 2693 - 2700 (2011/08/22)

Synthesis of 3-(2-(phenylsulfonyl) ethynyl)-2H-chromen-2-one is described. Reaction of β-ketosulfones with semicarbazide hydrochloride in ethanol at reflux temperature gave the corresponding semicarbazones, which on oxidative cyclization with selenium dioxide resulted in the formation of the corresponding 1,2,3-selenodiazole derivatives. These on pyrolysis gave the titled compounds. Taylor & Francis Group, LLC.

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