5-Methylsalicylic acid

5-Methylsalicylic acid is an organic compound with the formula CH₃C₆H₃(CO₂H)(OH). It is a white solid 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.

5-Methylsalicylic acid

Names
IUPAC name 2-Hydroxy-5-methylbenzoic acid
Other names 2,5-Cresotic acid p-Cresotic acid p-Cresotinic acid 2-Hydroxy-m-toluic acid
Identifiers
CAS Number	89-56-5
3D model (JSmol)	Interactive image
ChEMBL	ChEMBL1161012
ChemSpider	6707
ECHA InfoCard	100.001.744
EC Number	201-918-6
PubChem CID	6973
UNII	6GAI2MTV5V
CompTox Dashboard (EPA)	DTXSID20237472
InChI InChI=1S/C8H8O3/c1-5-2-3-7(9)6(4-5)8(10)11/h2-4,9H,1H3,(H,10,11) Key: DLGBEGBHXSAQOC-UHFFFAOYSA-N
SMILES CC1=CC(=C(C=C1)O)C(=O)O
Properties
Chemical formula	C8H8O3
Molar mass	152.149 g·mol^−1
Appearance	white solid
Density	1.31 g/cm^3
Melting point	151 °C (304 °F; 424 K)
Hazards
GHS pictograms
GHS Signal word	Warning
GHS hazard statements	H302, H315, H319, H335
GHS precautionary statements	P261, P264, P270, P271, P280, P301+312, P302+352, P304+340, P305+351+338, P312, P321, P330, P332+313, P337+313, P362, P403+233, P405, P501
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

It can be prepared by hydroxylation of 3-methylbenzoic acid.[1]

See also

• 3-Methylsalicylic acid
• 4-Methylsalicylic acid
• 6-Methylsalicylic acid

References

1. Zhang, Yang-Hui; Yu, Jin-Quan (2009). "Pd(II)-catalyzed hydroxylation of arenes with 1 atm of O₂ or air". Journal of the American Chemical Society. 131 (41): 14654–14655. doi:10.1021/ja907198n. PMID 19788192.