C6H7NO
109.13 g/mol
Dye & PigmentWarning
4-aminophenol
CAS123-30-8EC204-616-2
Category
Dye & Pigment
Compound Class
Aromatic
Primary Use
dye intermediate and photographic developer
4-Aminophenol is an organic compound that serves as a dye intermediate and photographic developer. It is also known as a metabolite of acetaminophen associated with analgesic activity.
dye intermediatephotographic developer
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
ApplicationSame Use
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Dye intermediate and photographic developer
ReferenceSame Category
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fluorescent solvent dye
ReferenceSame Category
Acid Blue 161
CAS12392-64-2
acid dye for textiles
ReferenceSame Category
Thymolphthalein
CAS125-20-2
pH indicator dye
ReferenceSame Category
4-{[4-(Dimethylamino)phenyl][(²H₅)phenyl]methylidene}-N,N-dimethylcyclohexa-2,5-dien-1-iminium 2,4,6-trinitrophenolate
CAS1258668-21-1
isotopically labeled dye reference standard
Referencestereoisomer of
4-(²H₂)Amino(O-²H₅)phenol
CAS285132-88-9
research compound
Referencestereoisomer of
4-Aminophenol-d4
CAS70237-44-4
research compound
Safety Reference
Warning
H302Harmful if swallowed
H332Harmful if inhaled
H341Suspected of causing genetic defects
H400Very toxic to aquatic life
H410Very toxic to aquatic life with long lasting effects
H317May cause an allergic skin reaction
H373May cause damage to organs through prolonged or repeated exposure
H320Causes eye irritation
H334May cause allergy or asthma symptoms or breathing difficulties if inhaled
H361Suspected of damaging fertility or the unborn child
H316Causes mild skin irritation
H370Causes damage to organs
H372Causes damage to organs through prolonged or repeated exposure
Regulatory Compliance1
- CN Catalogue of Hazardous ChemicalsCNRegulation
Customs Tariff Classification
The international HS code for 4-aminophenol (CAS 123-30-8) is 2922.29.
HS code (international, 6-digit)
2922.29
EU CN code (8-digit)
2922 29 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-aminophenol
InChIKey
PLIKAWJENQZMHA-UHFFFAOYSA-N
SMILES
C1=CC(=CC=C1N)O
Synonyms (77)
- 4NL
- UNAL
- 4-Aminophenol, United States Pharmacopeia (USP)
- Mesalamine EP Impurity A
- Mesalazine Imp. A (EP); Paracetamol Imp. K (EP); 4-Aminophenol; Mesalazine Impurity A; Paracetamol Impurity K
- Mesalazine impurity A, European Pharmacopoeia (EP)
- Paracetamol EP Impurity K
- Propacetamol Hydrochloride EP Impurity B; Paracetamol EP Impurity K; Mesalazine EP Impurity A
- 1-Amino-4-hydroxybenzene
- 4-Amino-1-hydroxybenzene
- 4-Aminophenol, >=99% (HPLC)
- 4-Aminophenol, PESTANAL(R)
- 4-aminobenzenol
- 4-aminophenol
- 4-aminophenol B
- 4-azaniumylphenolate
- 4-hydroxyaniline
- 4-hydroxybenzenamine
- 4-hydroxyphenylamine
- AJ-333/25022099
- Activol
- Aminophenol, p-
- Azol
- BASF Ursol P Base
- Benzofur P
- Buprofezin metabolite BF22
- C.I. 76550
- C.I. Oxidation Base 6
- Certinal
- Citol
- Durafur Brown R (Salt/Mix)
- Durafur Brown RB
- Energol
- Fouramine P
- Fourrine 84
- Fourrine P Base
- Furro P (Salt/Mix)
- Furro P Base
- Futramine P (Salt/Mix)
- Kodelon
- MESALAZINE IMPURITY A
- Mesalazine impurity A CRS
- Nako Brown R
- PARACETAMOL IMPURITY K
- Para-aminophenol
- Paracetamol impurity K CRS
- Paramidophenol
- Paranol
- Pelagol CP (Salt/Mix)
- Pelagol Grey CP (Salt/Mix)
- Pelagol Grey P Base
- Pelagol P Base
- Peltol P (Salt/Mix)
- Phenol, 4-amino-
- Phenol, p-amino-
- Renal AC
- Rodinal
- Takatol
- Tertral P Base
- Ursol P
- Ursol P Base
- Zoba Brown P Base
- aniline, 4-hydroxy-
- p-Aminofenol
- p-Aminofenol [Czech]
- p-Hydroxyphenylamine
- p-aminobenzenol
- p-aminophenol
- p-hydroxyaniline
- para-hydroxyaniline
- phenol derivative, 9
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