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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HCID 75231Generated: October 23, 2026

4-Methoxysalicylic Acid

2-HYDROXY-4-METHOXYBENZOIC ACID · AKOS 210-04 · 4-MethoxysaL · ASISCHEM D13357 · 4-Methoxysalicylic · RARECHEM AL BE 0038 · 4-Methoxysalicylic a · 4-METHOXYSALICILICACID

https://huagongshe.com/en/chemical/75231

4-Methoxysalicylic Acid molecular structure

Identifiers & Physical Properties

CAS No.2237-36-7
Molecular formulaC8H8O4
Average molar mass168.15 g/mol
Monoisotopic mass168.04225874 g/mol
SMILESCOc1ccc(C(=O)O)c(O)c1
InChIKeyMRIXVKKOHPQOFK-UHFFFAOYSA-N
PubChem CID75231
ChEMBLCHEMBL507095
ChEBICHEBI:167809
EC No.218-801-0
DTXSIDDTXSID50176906

Chemical & Physical Properties

XLogP2
Topological polar surface area66.8
Hydrogen bond donors2
Hydrogen bond acceptors4
Rotatable bonds2
Heavy atoms12
Formal charge0
Complexity168
Endocrine DisruptorsPotential endocrine disrupting compound
Collision Cross Section120.33 Ų [M+H-H2O]+ [CCS Type: TWMethod: calibrated with polyalanine and drug standards]
Melting point158-159 °C(lit.)
Boiling point217.07°C (rough estimate)
Density1.1816 (rough estimate)
Refractive index1.4611 (estimate)
RTECS numberDH2270000
Storage conditionsInert atmosphere,Room Temperature
Solubilitysoluble in Methanol
Physical statePowder
pKa (acidity coefficient)3.22±0.10(Predicted)
ColorOff-white to beige
InChIInChI=1S/C8H8O4/c1-12-5-2-3-6(8(10)11)7(9)4-5/h2-4,9H,1H3,(H,10,11)
InChIKeyMRIXVKKOHPQOFK-UHFFFAOYSA-N
SMILESC(O)(=O)C1=CC=C(OC)C=C1O
LogP (partition coefficient)2.240 (est)
CAS DataBase Reference2237-36-7(CAS DataBase Reference)
UNSPSC Code12352100
NACRESNA.22
GHS pictogramGHS07
Signal wordWarning
GHS hazard statementsH315-H319-H335
GHS precautionary statementsP261-P264-P271-P280-P302+P352-P305+P351+P338
Target organsRespiratory system
Personal protective equipment (PPE)dust mask type N95 (US), Eyeshields, Gloves
Hazard symbolsXi,Xn
Risk statements (R)36/37/38-20/21/22
Safety statements (S)26-37/39-36
Water hazard class (WGK)3
Hazard NoteIrritant
Customs code29189900
Storage class11 - Combustible Solids
Hazard classEye Irrit. 2Skin Irrit. 2STOT SE 3

Safety & Regulations

GHS classificationWarningH315 (100%): Causes skin irritation [Warning Skin corrosion/irritation]P261, P264, P264+P265, P271, P280, P302+P352, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, P403+P233, P405, and P501 (click each P-code to see the statement)Aggregated GHS information provided per 42 reports by companies from 5 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.
Hazard Classes and CategoriesSkin Irrit. 2 (100%)
Personal protective equipment (PPE)dust mask type N95 (US), Eyeshields, Gloves
Water hazard class (WGK)3
Customs code29189900
Risk statements (R)36/37/38-20/21/22
Signal wordWarning
GHS pictogramGHS07
Hazard symbolsXi,Xn
hazard_noteIrritant
Safety statements (S)26-37/39-36
Storage class11 - Combustible Solids
Target organsRespiratory system
GHS hazard statementsH315-H319-H335
Hazard classEye Irrit. 2Skin Irrit. 2STOT SE 3
GHS precautionary statementsP261-P264-P271-P280-P302+P352-P305+P351+P338

Applications & Uses

Uses

2-Hydroxy-4-methoxybenzoic acid (4-methoxysalicylic acid) was used in the synthesis of 1,3,4-oxadiazole derivatives.

4-Methoxysalicylic Acid|Huagongshe