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13639-20-8

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13639-20-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 13639-20-8 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,3,6,3 and 9 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 13639-20:
(7*1)+(6*3)+(5*6)+(4*3)+(3*9)+(2*2)+(1*0)=98
98 % 10 = 8
So 13639-20-8 is a valid CAS Registry Number.

13639-20-8SDS

SAFETY DATA SHEETS

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

Version: 1.0

Creation Date: Aug 18, 2017

Revision Date: Aug 18, 2017

1.Identification

1.1 GHS Product identifier

Product name monopotassium para-hydroxybenzoate

1.2 Other means of identification

Product number -
Other names 4-hydroxybenzoic acid potassium salt

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:13639-20-8 SDS

13639-20-8Relevant articles and documents

An Anionic, Chelating C(sp3)/NHC ligand from the Combination of an N-heterobicyclic Carbene and Barbituric Heterocycle

Benaissa, Idir,Gajda, Katarzyna,Vendier, Laure,Lugan, No?l,Kajetanowicz, Anna,Grela, Karol,Michelet, Véronique,César, Vincent,Bastin, Stéphanie

, p. 3223 - 3234 (2021/09/30)

The coordination chemistry of the anionic NHC1-based on an imidazo[1,5-a]pyridin-3-ylidene (IPy) platform substituted at the C5 position by an anionic barbituric heterocycle was studied with d6(Ru(II), Mn(I)) and d8(Pd(II), Rh(I), Ir(I), Au(III)) transition-metal centers. While the anionic barbituric heterocycle is planar in the zwitterionic NHC precursor 1·H, NMR spectroscopic analyses supplemented by X-ray diffraction studies evidenced the chelating behavior of ligand 1-through the carbenic and the malonic carbon atoms in all of the complexes, resulting from a deformation of the lateral barbituric heterocycle. The complexes were obtained by reaction of the free carbene with the appropriate metal precursor, except for the Au(III) complex 10, which was obtained by oxidation of the antecedent gold(I) complex [AuCl(1)]?with PhICl2as an external oxidant. During the course of the process, the kinetic gold(I) intermediate 9 resulting from the oxidation of the malonic carbon of the barbituric moiety was isolated upon crystallization from the reaction mixture. The νCOstretching frequencies recorded for complex [Rh(1)(CO)2] (5) demonstrated the strong donating character of the malonate-C(sp3)/NHC ligand 1-. The ruthenium complex [Ru(1)Cl(p-cymene)] (11) was implemented as a precatalyst in the dehydrogenative synthesis of carboxylic acid derivatives from primary alcohols and exhibited high activities at low catalyst loadings (25-250 ppm) and a large tolerance toward functional groups.

4-HYDROXY BENZOATE DERIVATIVES FOR USE IN THE TREATMENT OF INFECTION, INFLAMMATION OR PAIN

-

Page/Page column 13, (2009/01/23)

The invention provides a compound of the general formula (I) for use in the topical treatment of infection, inflammation and/or pain: wherein R1 independently represents a methylene group, an ethylene group or a straight or branched chain C3 to C6 alkylene group; R2 independently represents a hydrogen atom, a methyl group, an ethyl group or a straight or branched chain C3 to C20 alkyl group; x represents 0 or an integer from 1 to 4 and y represents 0 or an integer from 1 to 4, wherein the sum of x and y is 4; and Z represents a hydrogen atom or (HOR1)yR2XN⊕; compositions comprising the compound; use of the compound in the manufacture of a medicament; and methods of medical treatment comprising the topical application of the compound.

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