5-chloro-3-nitro-pyridine-2-carboxylic acid CAS 899423-94-0
| CAS No. | 899423-94-0 |
| Molecular Formula | C6H9ClN2O4 |
| Molecular Weight | 208.60 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 208.60 g/mol gives 5-chloro-3-nitro-pyridine-2-carboxylic acid distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
5-chloro-3-nitro-pyridine-2-carboxylic acid (CAS 899423-94-0) is a high-purity analytical reference standard with the molecular formula C6H9ClN2O4 and a molecular weight of 208.60 g/mol.
Structurally, 5-chloro-3-nitro-pyridine-2-carboxylic acid (C6H9ClN2O4) contains an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 3.0, corresponding to approximately 3 ring(s) or double-bond equivalent(s). With a molecular weight of 208.60 g/mol, it falls into the medium-molecular-weight range. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C6H9ClN2O4 |
| Molecular Weight | 208.60 g/mol |
| Appearance | White to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1987 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related chloro Standards
- 3-Chloro-6-nitroquinoline (CAS 101860-71-3)
- 8-Chloro-1,7-naphthyridine-6-carboxylic acid (CAS 1019111-25-1)
- 3-(4-Chloro-3-nitrophenyl)prop-2-enenitrile (CAS 1027720-44-0)
- 3-Chloro-5-nitroisoquinoline (CAS 10296-47-6)
- 7-Chloro-4-nitroquinoline (CAS 1076199-85-3)
- 3-Chloro-5-nitroquinoline (CAS 116529-79-4)
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- 8-Chloro-6-nitroquinoline (CAS 121465-04-1)
Recommended Standards
- 5-Chloro-2-(1H-tetrazol-1-yl)benzaldehyde (CAS 879016-22-5)
- 5-Chloro-6-nitroquinoline (CAS 58416-32-3)
- 5-(Pyridin-2-yl)isoxazole-3-carbonyl chloride (CAS 88958-32-1)
- 5-Chloro-8-nitroisoquinoline (CAS 58142-95-3)
- 3-(4-Sulfamoylphenyl)prop-2-enoic acid (CAS 156572-77-9)
- 6-Bromo-4-methoxy-1H-indazole (CAS 885519-21-1)
- 5-Methyloctahydro-1H-pyrrolo[3,2-c]pyridine dihydrochloride (CAS 2173992-26-0)
- 4-chloro-1-N-cyclopropylbenzene-1,2-diamine (CAS 1092286-35-5)
- 7-Bromo-2-(trifluoromethyl)imidazo[1,2-a]pyridin-6-amine (CAS 2091897-13-9)
- 5-[3-[(Aminoiminomethyl)amino]-1-propynyl]-2'-deoxy-uridine 5'-(tetrahydrogen triphosphate) (CAS 402932-20-1)
- 1-(5-Bromo-1H-pyrrolo[2,3-c]pyridin-3-yl)ethan-1-one (CAS 1427504-22-0)
- 5-Chlorobenzo[i]phenanthridine (CAS 860701-09-3)
- 4-(4-Ethoxyphenyl)-1H-imidazol-2-amine (CAS 76507-16-9)
- Des-Tyr10-Tirzepatide (CAS CATO-CPTD788680)
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