4-Nitrosophenol CAS 104-91-6
| CAS No. | 104-91-6 |
| Molecular Formula | C6H5NO2 |
| Molecular Weight | 123.11 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 4-Nitrosophenol is closely related to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies 4-Nitrosophenol (CAS 104-91-6), a certified reference material (molecular formula C6H5NO2, MW 123.11 g/mol) for analytical method development and quality control.
Based on its molecular formula C6H5NO2, 4-Nitrosophenol contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 123.11 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures 4-Nitrosophenol under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C6H5NO2 |
| Molecular Weight | 123.11 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 1 |
Recommended Standards
- L-Valine-13C5, 15N (CAS 202407-30-5)
- 5-Hydroxynicotinaldehyde (CAS 1060804-48-9)
- [13C6]-1H-Indole (CAS 853409-50-4)
- 4-Hydroxypicolinaldehyde (CAS 1060809-85-9)
- Clindamycin 3-Palmitate (CAS CATO-C4X-1341129)
- 2-Phenyl-2H-furo[3,4-d][1,2,3]triazol-4(6H)-one (CAS 73314-46-2)
- 2-(4-Bromophenyl)-3-methylbutanenitrile (CAS 51632-12-3)
- 4-Methylphenyl 4-6-O-benzylidene-β-D-thioglucopyranoside (CAS 868241-49-0)
- (16α)-9-Fluoro-16,17,21-trihydroxy-pregna-1,4-diene-3,11,20-trione (CAS 3107-69-5)
- 2-amino-3-cyclopropylpropanamide hydrochloride (CAS 2227204-82-0)
- 2-(Piperazin-1-yl)thiazole-4-carboxylic acid dihydrochloride (CAS 2138098-59-4)
- 4-((1,3,5-Trimethyl-1H-pyrazol-4-yl)methyl)phenyl (3-(trifluoromethyl)phenyl)carbamate (CAS 318284-34-3)
- 2-(Benzylthio)-2-methylpropan-1-amine hydrochloride (CAS 60116-06-5)
- Insulin Degludec impurity 4 (CAS CATO-C4X-21574)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com