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19909-44-5

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19909-44-5 Usage

Synthesis Reference(s)

Canadian Journal of Chemistry, 49, p. 1099, 1971 DOI: 10.1139/v71-180

Check Digit Verification of cas no

The CAS Registry Mumber 19909-44-5 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,9,0 and 9 respectively; the second part has 2 digits, 4 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 19909-44:
(7*1)+(6*9)+(5*9)+(4*0)+(3*9)+(2*4)+(1*4)=145
145 % 10 = 5
So 19909-44-5 is a valid CAS Registry Number.
InChI:InChI=1/C16H10O4/c17-13(11-7-3-1-4-8-11)15(19)16(20)14(18)12-9-5-2-6-10-12/h1-10H

19909-44-5SDS

SAFETY DATA SHEETS

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

Version: 1.0

Creation Date: Aug 17, 2017

Revision Date: Aug 17, 2017

1.Identification

1.1 GHS Product identifier

Product name 1,4-diphenylbutane-1,2,3,4-tetrone

1.2 Other means of identification

Product number -
Other names 1,4-Diphenylbutanetetrone

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:19909-44-5 SDS

19909-44-5Relevant articles and documents

Controllable chemoselectivity in the coupling of bromoalkynes with alcohols under visible-light irradiation without additives: Synthesis of propargyl alcohols and α-ketoesters

Ni, Ke,Meng, Ling-Guo,Ruan, Hongjie,Wang, Lei

, p. 8438 - 8441 (2019/07/22)

The chemoselectivity of visible-light-induced coupling reactions of bromoalkynes with alcohols can be controlled by simple changes to the reaction atmosphere (N2 or O2). A N2 atmosphere favours propargyl alcohols via a direct C-C coupling process, whereas an O2 atmosphere results in the generation of α-ketoesters through the oxidative CC/C-O coupling pathway.

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