C7H8O2
124.14 g/mol
Pharmaceutical IntermediateWarning
4-Methoxyphenol
CAS150-76-5EC205-769-8
Category
Pharmaceutical Intermediate
Compound Class
Aromatic
Primary Use
Pharmaceutical Intermediate
4-Methoxyphenol, also known as hydroquinone monomethyl ether, appears as pink crystals or a white waxy solid. It is used primarily as an antioxidant and polymerization inhibitor in industrial and pharmaceutical applications.
inhibitor for acrylic monomersstabilizer for chlorinated hydrocarbons and ethyl celluloseultraviolet inhibitor
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
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Related Compounds
SimilarStructure SimilarSimilarity 0.84
4-Hydroxy-4'-methoxybiphenyl
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Trans-5-((benzyloxy)amino)piperidine-2-carboxylicacid
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ReferenceSame Category
Ethyl 2,6-difluoro-3-nitrobenzoate
CAS150368-36-8
pharmaceutical intermediate
Referencestereoisomer of
4-METHOXYPHENOL-2,3,5,6-D4
CAS159839-23-3
research compound
Safety Reference
Warning
H302Harmful if swallowed
H317May cause an allergic skin reaction
H319Causes serious eye irritation
H412Harmful to aquatic life with long lasting effects
H320Causes eye irritation
H351Suspected of causing cancer
H361Suspected of damaging fertility or the unborn child
H401Toxic to aquatic life
H315Causes skin irritation
H402Harmful to aquatic life
Customs Tariff Classification
The international HS code for 4-Methoxyphenol (CAS 150-76-5) is 2909.50.
HS code (international, 6-digit)
2909.50
EU CN code (8-digit)
2909 50 00
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
Identifiers
IUPAC Name
4-methoxyphenol
InChIKey
NWVVVBRKAWDGAB-UHFFFAOYSA-N
SMILES
COC1=CC=C(C=C1)O
Synonyms (49)
- 4KS
- HQME
- HQMME
- MEHQ
- Guaiacol EP Impurity G
- Mequinol (INN)
- Mequinol (USAN/INN)
- Mequinol, INN, USAN
- Mequinolum [INN-Latin]
- 1-Hydroxy-4-methoxybenzene
- 4-(methyloxy)phenol
- 4-Hydroxyanisole
- 4-Methoxy (D3)phenol
- 4-Methoxyphenol
- BMS 181158
- Eastman HQMME
- HYDROQUINONE MONOMETHYL ETHER
- Hydroquinone methyl ether
- Hydroxyanisole
- Leucobasal
- Leucodine B
- MEQUINOL [MART.]
- Mechinolo
- Mechinolum
- Mequinol
- Mequinol (Standard)
- Mequinolum
- Monomethyl ether hydroquinone
- Novo-Dermoquinona
- O-methylhydroquinone
- P-Guaiacol
- PMF (antioxidant)
- Pharmakon1600-00212037
- Phenol, 4-methoxy-
- Phenol, p-methoxy-
- SOLAGE COMPONENT MEQUINOL
- USAF AN-7
- hydroxyquinone methyl ether
- p-Hydroxyanisole
- p-Hydroxymethoxybenzene
- p-Methoxyphenol
- para- hydroxyanisole
- para-methoxyphenol
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