4-nitrosophenol
This is the primary chemical detail page for 4-nitrosophenol · CAS 104-91-6. The current molecular formula entry is C6H5NO2. 90 searchable synonyms resolve back to this record. Use this page as the main reference for identifiers, naming variants, and supplier-linked context.
Overview
Key identifiers
- CAS No.
- 104-91-6
- Primary name
- 4-nitrosophenol
- Formula
- C6H5NO2
Record status
Added Apr 3, 2026 · Updated Apr 3, 2026
Properties
- Molecular formula
- C6H5NO2
Safety
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About this chemical
This page represents the primary record for 4-nitrosophenol with CAS Registry Number 104-91-6. The molecular formula is C6H5NO2. This chemical may be referenced by 90 different names or synonyms.
Primary identifiers: English name · CAS · Molecular formula (when available). Synonym and alternate-name pages all resolve back to this record.
Synonyms and naming
Chemicals are often known by multiple names depending on context, industry, or language. This entry includes 90 searchable synonyms. Alternate-name landing pages, where present, all resolve back to this main record.
Use the synonym list below as naming context; keep this chemical detail page as the primary reference.
Synonyms
Common & readable names (75)
- 104-91-6
- p-Nitrosophenol
- Phenol, 4-nitroso-
- Quinone monoxime
- Nitrosophenol
- Quinone oxime
- Phenol, p-nitroso-
- 1,4-Benzoquinone monoxime
- para-Nitrosophenol
- 55EB58H2UP
- DTXCID405991
- RefChem:526027
- 203-251-6
- 4-Benzoquinone Monoxime
- 637-62-7
- p-Quinone monoxime
- Quinone monooxime
- 1,4-Benzoquinone 4-oxime
- p-Quinone monooxime
- 4-Nitrosofenol
- Quinone 4-oxime
- p-Benzoquinone 4-oxime
- p-Benzoquinone, monooxime
- p-Chinonmonoxim
- 2,5-Cyclohexadiene-1,4-dione, monooxime
- p-Benzoquinone monoxime
- 4-Hydroxyimino-2,5-cyclohexadiene-1-one
- 4-(hydroxyimino)cyclohexa-2,5-dien-1-one
- 4-07-00-02073 (Beilstein Handbook Reference)
- p-Chinonmonoxim [Czech]
- 4-Nitrosofenol [Czech]
- CAS-104-91-6
- CCRIS 4710
- HSDB 5362
- EINECS 203-251-6
- BRN 1856695
- BRN 2040595
- 2,5-Cyclohexadiene-1,4-dione 1-Oxime
- 2,5-Cyclohexadien-1-one, 4-hydroxyimino-
- AI3-19026
- benzoquinone oxime
- mono-nitroso phenol
- benzoquinone monooxime
- 2, 4-hydroxyimino-
- 2,4-dione, monooxime
- WLN: QR DNO
- benzoquinone imine N-oxide
- NITROSOPHENOL, 4-
- WLN: L6V DYJ DUNQ
- 4-NITROSOPHENOL [MI]
- SCHEMBL107699
- SCHEMBL232995
- SCHEMBL712641
- 1,4-Benzoquinone, 1-oxime-
- CHEMBL104353
- 4-NITROSOPHENOL [HSDB]
- CHEMBL3276923
- SCHEMBL11345168
- JSTCPNFNKICNNO-UHFFFAOYSA-
- KMGMCLWJFCGWFI-UHFFFAOYSA-N
- Tox21_201754
- Tox21_303059
- STL453714
- AKOS006230373
- AKOS006311740
- NCGC00249111-01
- NCGC00257216-01
- NCGC00259303-01
- 4-hydroxyimino-cyclohexa-2,5-dien-1-one
- CS-0366469
- D95331
- 4-NITROSOPHENOL (WETTED WITH CA. 40% WATER)
- Q27261304
- InChI=1/C6H5NO2/c8-6-3-1-5(7-9)2-4-6/h1-4,8H
- 4-Nitrosophenol (wetted with ca. 40% Water) (unit weight on dry weight basis)
Registry & reference names (15)
- DTXSID0025991
- NSC-3124
- MFCD00002329
- NSC 3124
- NSC3124
- NSC 239647
- UNII-55EB58H2UP
- 2,5-Cyclohexadiene-1,4-dione 1-Oxime; 1,4-Benzoquinone 4-Oxime; Quinone Monooxime; NSC 239647;
- DTXSID0075287
- NSC239647
- FB18225
- FN00312
- NSC-239647
- N0374
- NS00021469