3-Ethoxy-4-nitro-1H-pyrazole-5-carboxylic acid CAS 400878-02-6
| CAS No. | 400878-02-6 |
| Molecular Formula | C6H7N3O5 |
| Molecular Weight | 201.14 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of 3-Ethoxy-4-nitro-1H-pyrazole-5-carboxylic acid is closely related to a carbohydrate-derived structure, an amide group in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies 3-Ethoxy-4-nitro-1H-pyrazole-5-carboxylic acid (CAS 400878-02-6), a certified reference material (molecular formula C6H7N3O5, MW 201.14 g/mol) for analytical method development and quality control.
The molecular framework of 3-Ethoxy-4-nitro-1H-pyrazole-5-carboxylic acid (C6H7N3O5) is characterized by a carbohydrate-derived structure, an amide group. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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.
As a certified reference material (CRM), 3-Ethoxy-4-nitro-1H-pyrazole-5-carboxylic acid 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 | C6H7N3O5 |
| Molecular Weight | 201.14 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| 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 |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 3 |
Related Ethoxy Standards
- 2-Ethoxy-4-nitro-1H-imidazole-5-carboxylic acid (CAS 195817-91-5)
- 4-Ethoxy-5-fluoro-2,6-dioxohexahydropyrimidine-5-carbonitrile (CAS 65906-82-3)
- 4-Ethoxy-3,5-difluorobenzamide (CAS 1017779-23-5)
- 4-Ethoxy-2,3-difluorobenzamide (CAS 1017779-57-5)
- 2-Ethoxy-3,5-difluorobenzamide (CAS 1017779-74-6)
- 3-Ethoxy-2,4-difluorobenzamide (CAS 1017779-91-7)
- 3-Ethoxy-2,6-difluorobenzamide (CAS 1092461-26-1)
- 4-Ethoxy-2,6-difluorobenzamide (CAS 916483-57-3)
Recommended Standards
- 2,2,2-trifluoro-N-[2-(2-hydroxyethoxy)ethyl]acetamide (CAS 302331-18-6)
- 6-Hydrazinyl-3-methyl-5-nitropyrimidine-2,4(3H,5H)-dione (CAS 880-83-1)
- 2-(3-Methoxy-4-nitro-1h-pyrazol-1-yl)acetic acid (CAS 512809-53-9)
- Ethyl 2-(5-nitro-2H-tetrazol-2-yl)acetate (CAS 359868-61-4)
- 3-(3-(Chloromethyl)phenyl)-1-methyl-1H-pyrazole (CAS 912569-61-0)
- 2-Bromo-6-ethoxy-4-formylphenyl acetate (CAS 99853-25-5)
- (1R,5S,6R)-rel-3-Oxabicyclo[3.1.0]hexane-6-carboxylic acid (CAS 55780-88-6)
- 2-(2-Bromo-4-fluorophenyl)ethanethioamide (CAS 1016726-84-3)
- 3-(1,2,4-oxadiazol-3-yl)propanoic acid (CAS 1092297-65-8)
- 6-Bromoisoquinoline 2-Oxide (CAS 223671-16-7)
- 6-Bromo-2-phenylbenzo[d]thiazole (CAS 77333-67-6)
- 2-Amino-N-ethyl-N-(1-methyl-pyrrolidin-3-ylmethyl)-acetamide (CAS 1353976-90-5)
- 1-(Anthracen-9-yl)butane-1,3-dione (CAS 101736-47-4)
- Semaglutide Impurity 190 (CAS CATO-C4X-2226190)
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