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2134-99-8

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2134-99-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 2134-99-8 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,1,3 and 4 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 2134-99:
(6*2)+(5*1)+(4*3)+(3*4)+(2*9)+(1*9)=68
68 % 10 = 8
So 2134-99-8 is a valid CAS Registry Number.
InChI:InChI=1/C13H8S/c1-3-5-6-7-9-13-11-10-12(14-13)8-4-2/h3,10-11H,1H2,2H3

2134-99-8SDS

SAFETY DATA SHEETS

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

Version: 1.0

Creation Date: Aug 15, 2017

Revision Date: Aug 15, 2017

1.Identification

1.1 GHS Product identifier

Product name 2-hex-5-en-1,3-diynyl-5-prop-1-ynylthiophene

1.2 Other means of identification

Product number -
Other names 2-propinyl-5-<hexa-3,5-diin-6-yl>thiophene

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:2134-99-8 SDS

2134-99-8Upstream product

2134-99-8Downstream Products

2134-99-8Relevant articles and documents

Visible-light photochemistry and phototoxicity of thiarubrines

Page, Jonathan E.,Block, Eric,Towers, G. H. Neil

, p. 159 - 165 (1999)

Thiarubrines, a group of intensely red, sulfur-containing pigments produced by asteraceous plants, are photolabile, yielding thiophenes and elemental sulfur upon exposure to UV or visible light. The mechanism of this light-induced conversion for thiarubrines A (1a), B (1b) and D (1c), isolated from the roots of Ambrosia chamissonis (Asteraceae), was investigated. Visible-light irradiation of thiarubrines resulted in the formation of novel 2,6-dithiabicyclo[3.1.0]hex-3-ene polyyne photointermediates (photosulfides) that rapidly undergo desulfurization to yield thiophenes. Six photosulfides, photosulfides 3a and 3a′ from thiarubrine A (1a), photosulfides 3b and 3b′ from thiarubrine B (1b) and photosulfides 3c and 3c′ from thiarubrine D (1c) were characterized. Thiarubrine photointermediates are short-lived and unstable, with the photosulfides formed from thiarubrine A having a half-life of 12.3 min at room temperature. While the immediate fate of the extruded sulfur is unknown, we identified cyclooctasulfur (S8) in photolysis solutions of thiarubrine A using electron impact mass spectrometry. Visible-light irradiation of Candida albicans cell suspensions treated with thiarubrine A led to a 99% decrease in cell viability, suggesting that the photosulfides, or other molecules generated by the exposure of thiarubrines to light, have significant toxicity.

Photochemistry of thiarubrine A and other 1,2-dithiins: Formation of 2,6-dithiabicyclo[3.1.0]hex-3-enes

Block, Eric,Page, Jon,Toscano, John P.,Wang, Cun-Xiao,Zhang, Xing,DeOrazio, Russell,Guo, Chuangxing,Sheridan, Robert S.,Neil Towers

, p. 4719 - 4720 (1996)

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