4-Nitro-1,2-phenylenediamine CAS 99-56-9
| CAS No. | 99-56-9 |
| Molecular Formula | C6H7N3O2 |
| Molecular Weight | 153.14 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 4-Nitro-1,2-phenylenediamine 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-Nitro-1,2-phenylenediamine (CAS 99-56-9), a certified reference material (molecular formula C6H7N3O2, MW 153.14 g/mol) for analytical method development and quality control.
Owing to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage, 4-Nitro-1,2-phenylenediamine is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 153.14 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 4-Nitro-1,2-phenylenediamine meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C6H7N3O2 |
| Molecular Weight | 153.14 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 3 |
Related Nitro Standards
- N-Nitro-4-pyridinemethanamine (CAS 1195605-33-4)
- 3-Nitro-1-(prop-2-en-1-yl)-1h-pyrazole (CAS 1240572-49-9)
- 4-Nitro-1-(prop-2-en-1-yl)-1h-pyrazole (CAS 1240577-26-7)
- 5-Nitro-o-cresol (CAS 5428-54-6)
- 3-Nitro-1,2-phenylenediamine (CAS 3694-52-8)
- 5-Methyl-4-nitro-2-pyridinamine (CAS 895520-03-3)
- 3-Nitro-p-cresol (CAS 2042-14-0)
- 4-Nitro-m-phenylenediamine (CAS 5131-58-8)
Recommended Standards
- 4-Nitroanisole (CAS 100-17-4)
- 2-Nitrobenzyl Alcohol (CAS 612-25-9)
- 3-Nitroanisole (CAS 555-03-3)
- 3-Hydroxyanthranilic Acid (CAS 548-93-6)
- trans-N1,N1-Dimethylcyclopentane-1,2-diamine xhydrochloride (CAS 1033245-36-1)
- N-((dimethylamino)methylene)-2-(4-fluorophenyl)-1-oxo-1,2-dihydroisoquinoline-4-carboxamide (CAS 339106-95-5)
- N1-(2-methoxybenzyl)-N1-methylethane-1,2-diamine (CAS 158663-49-1)
- 2-(Aminomethyl)-5-(difluoromethyl)-6-fluoro-3-hydroxypyridine (CAS 1805504-38-4)
- 2-Fluoro-6-methoxybenzoic acid (CAS 137654-21-8)
- [2,5-Dimethyl-3-oxazol-2-yl-4-(propane-1-sulfonyl)-phenyl]-(1-ethyl-5-hydroxy-1H-pyrazol-4-yl)-methanone (CAS 1231565-77-7)
- 6-Chloro-4-cyclopropylpyridazin-3-amine (CAS 1823187-64-9)
- 3-(Aminomethyl)-1h-indol-5-ol (CAS 52700-62-6)
- 4,4'-((2-Chloro-5-nitrophenyl)methylene)bis(N,N-dimethylaniline) (CAS 256925-03-8)
- Acetyl tetrapeptide-3 (CAS 827306-88-7)
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