89-56-5 Usage
Chemical Properties
5-Methylsalicylic acid is a white to beige powder that is soluble in basic water and in polar organic solvents. At neutral pH, the acid exists as 5-methylsalicylate Its functional groups include a carboxylic acid and a phenol group. It is one of four isomers of methylsalicylic acid.
Uses
Different sources of media describe the Uses of 89-56-5 differently. You can refer to the following data:
1. Toxicity is similar to salicylic acid. 5-Methylsalicylic acid is used in manufacturing of dyes.
2. 5-Methylsalicylic acid was used in generation of o-sulfate conjugates in situ and their analysis by ultra-performance liquid chromatography-time-of-flight mass spectrometry.
Preparation
5-Methylsalicylic acid can be prepared by hydroxylation of 3-methylbenzoic acid.
General Description
5-Methylsalicylic acid exhibits a significant cross-reactivity during fluorescent polarization immunoassay for salicylates in serum.
Purification Methods
Crystallise the acid from H2O. [Beilstein 10 H 227, 10 II 134, 10 III 516, 10 IV 610.]
Check Digit Verification of cas no
The CAS Registry Mumber 89-56-5 includes 5 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 2 digits, 8 and 9 respectively; the second part has 2 digits, 5 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 89-56:
(4*8)+(3*9)+(2*5)+(1*6)=75
75 % 10 = 5
So 89-56-5 is a valid CAS Registry Number.
InChI:InChI=1/C8H8O3/c1-5-2-3-7(9)6(4-5)8(10)11/h2-4,9H,1H3,(H,10,11)/p-1
89-56-5Relevant articles and documents
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Cameron et al.
, p. 233,234 (1950)
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Synthesis of cresotic acids by carboxylation of cresols with sodium ethyl carbonate
Suerbaev, Kh. A.,Chepaikin,Kudaibergenov, N. Zh.,Zhaksylykova, G. Zh.
, p. 646 - 650 (2016/08/16)
Carboxylation of o-cresol, m-cresol, and p-cresol with sodium ethyl carbonate (SEC) proceeds regioselectively with the formation of cresotic acids: 2-hydroxy-3-methylbenzoic acid, 2-hydroxy-4-methylbenzoic acid, and 2-hydroxy-5-methylbenzoic acid, respectively. Optimal conditions for conducting the process have been found to be as follows: the reactants ratio of [cresol]: [sodium ethyl carbonate] = (1.5–2): 1, T = 180–185°C, PCO2 = 10 atm, and t = 6–7 h. Simple and convenient methods for the synthesis of cresotic acids, which can be used for their industrial manufacturing, have been developed.
Carboxylation of Phenols with CO2 at Atmospheric Pressure
Luo, Junfei,Preciado, Sara,Xie, Pan,Larrosa, Igor
supporting information, p. 6798 - 6802 (2016/05/11)
A convenient and efficient method for the ortho-carboxylation of phenols under atmospheric CO2 pressure has been developed. This method provides an alternative to the previously reported Kolbe-Schmitt method, which requires very high pressures of CO2. The addition of a trisubstituted phenol has proved essential for the successful carboxylation of phenols with CO2 at standard atmospheric pressure, allowing the efficient preparation of a broad variety of salicylic acids.