5-Methoxysalicylic acid

5-Methoxysalicylic acid
Names
	Preferred IUPAC name 2-Hydroxy-5-methoxybenzoic acid
	Other names 5-Methoxysalicylic acid; 6-Hydroxy-m-anisic acid; 5-Methoxy-2-hydroxybenzoic acid; m-Anisic acid; MSA
Identifiers
CAS Number	2612-02-4 ;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:89830;
ChEMBL	ChEMBL452949;
ChemSpider	68296;
ECHA InfoCard	100.018.217
EC Number	220-037-8;
PubChem CID	75787;
UNII	6GAI2MTV5V ;
CompTox Dashboard (EPA)	DTXSID0062551 ;
	InChI InChI=1S/C8H8O4/c1-12-5-2-3-7(9)6(4-5)8(10)11/h2-4,9H,1H3,(H,10,11) Key: IZZIWIAOVZOBLF-UHFFFAOYSA-N;
	SMILES COC1=CC(=C(C=C1)O)C(=O)O;
Properties
Chemical formula	C8H8O4
Molar mass	168.148 g·mol−1
Hazards
	GHS labelling:[1]
Pictograms
Signal word	Warning
Hazard statements	H315, H319, H335
Precautionary statements	P261, P264, P264+P265, P271, P280, P302+P352, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, P403+P233, P405, P501
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Infobox references

5-Methoxysalicylic acid is a chemical compound. It is a component of castoreum, the exudate from the castor sacs of the mature beaver.

A mixture of 5-methoxysalicylic acid and spermine can be used as a matrix for oligonucleotides analysis in MALDI mass spectrometry.

It is an isomer of vanillic acid.