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261-40-5

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

1.5 Emergency phone number

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

More Details:261-40-5 SDS

261-40-5Downstream Products

261-40-5Relevant articles and documents

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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