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9H-Selenoxanthene is a heterocyclic organic compound belonging to the family of xanthene derivatives, characterized by the presence of a selenium atom in place of one of the oxygen atoms in the xanthene structure. It is a colorless crystalline solid with a molecular formula of C13H8Se and a molecular weight of 221.17 g/mol. 9H-Selenoxanthene exhibits unique photophysical and redox properties due to the presence of selenium, making it a potential candidate for applications in organic electronics, photochemistry, and materials science. 9H-Selenoxanthene can be synthesized through various methods, including the condensation of phenol with selenophenol or the reaction of 9-chloroxanthene with sodium selenide. Its chemical structure and properties make it an interesting subject for further research and development in the field of organoselenium chemistry.

261-40-5

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261-40-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 261-40-5 includes 6 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 3 digits, 2,6 and 1 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 261-40:
(5*2)+(4*6)+(3*1)+(2*4)+(1*0)=45
45 % 10 = 5
So 261-40-5 is a valid CAS Registry Number.

261-40-5SDS

SAFETY DATA SHEETS

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

Version: 1.0

Creation Date: Aug 16, 2017

Revision Date: Aug 16, 2017

1.Identification

1.1 GHS Product identifier

Product name 9H-selenoxanthene

1.2 Other means of identification

Product number -
Other names -

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

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More Details:261-40-5 SDS

261-40-5Downstream Products

261-40-5Relevant academic research and scientific papers

Synthesis, Stereochemistry and Reactions of Selenoxanthen-10-io(alkoxalyl alkoxycarbonyl)methanides and Related Compounds

Kataoka, Tadashi,Tomimatsu, Kiminori,Shimizu, Hiroshi,Hori, Mikio

, p. 2666 - 2675 (2007/10/02)

Selenoxanthen 10-oxides (5a-d) reacted with methyl propiolate, dimethyl and diethyl acetylenedicarboxylates to afford selenoxanthen-10-iometanides (6a-i).The 9-isopropyl derivative gave only trans-ylides and the 9-phenyl congener formed cis- and trans-ylides.The stereochemistry is discussed on the basis of the nuclear magnetic resonance spectral data.Reduction of the selenoxanthenium ylides with sodium borohydride afforded the ylide lactones (16a-c) and the ylide alcohols (17a-f).The Product ratio depended on the solvent used.Keywords - selenium ylide; selenoxide; selenoxanthene; methyl propiolate; dimethyl acetylenedicarboxylate; stereoisomer; stereochemistry; sodium borohydride reduction; lactonization

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