1-(3-Chlorobenzyl)-3-nitro-1H-pyrazole-5-carboxylic acid CAS 1281872-37-4
| CAS No. | 1281872-37-4 |
| Molecular Formula | C11H8ClN3O4 |
| Molecular Weight | 281.65 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
1-(3-Chlorobenzyl)-3-nitro-1H-pyrazole-5-carboxylic acid (C11H8ClN3O4) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
CATO supplies 1-(3-Chlorobenzyl)-3-nitro-1H-pyrazole-5-carboxylic acid (CAS 1281872-37-4), a certified reference material (molecular formula C11H8ClN3O4, MW 281.65 g/mol) for analytical method development and quality control.
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 1-(3-Chlorobenzyl)-3-nitro-1H-pyrazole-5-carboxylic acid 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 | C11H8ClN3O4 |
| Molecular Weight | 281.65 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-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 |
| 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1990 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
Related Chlorobenzyl Standards
- 1-(3-Chlorobenzyl)-4-nitro-1H-pyrazole-3-carboxylic acid (CAS 1281872-35-2)
- 1-(2-Chlorobenzyl)-1H-1,2,3-triazole-4,5-dicarboxylic acid (CAS 63778-16-5)
- 1-(4-Chlorobenzyl)-3-nitro-1H-pyrazole-5-carboxylic acid (CAS 402614-96-4)
- (S)-2-(2-((4-chlorobenzyl)amino)-2-oxoethyl)pent-4-enoic acid (CAS 1132653-76-9)
- Ethyl 4-(2-chlorobenzyl)piperidine-4-carboxylate (CAS 1332086-98-2)
- Ethyl 1-(3-chlorobenzyl)piperidine-3-carboxylate (CAS 414889-03-5)
- Ethyl 1-(4-chlorobenzyl)piperidine-4-carboxylate (CAS 308109-90-2)
- Methyl 2-(1-(2-chlorobenzyl)piperidin-4-yl)acetate (CAS 946742-67-2)
Recommended Standards
- 1-[(2-Chlorophenyl)methyl]-4-nitro-1H-pyrazole-3-carboxylic acid (CAS 1281872-42-1)
- Methyl 1-(4-chloro-2-nitrophenyl)-1H-pyrazole-4-carboxylate (CAS 1172922-82-5)
- 2-Chloro-5-methoxy-4-(3-nitrophenoxy)pyrimidine (CAS 1643967-59-2)
- 1-[(4-chloro-3-nitrophenyl)methyl]-1,2,3,4-tetrahydropyrimidine-2,4-dione (CAS 1097789-53-1)
- 4-(2-Ethylphenyl)-5-(phenoxymethyl)-4H-1,2,4-triazole-3-thiol (CAS 917747-00-3)
- 7-Fluoro-1,4-dimethyl-2-oxo-1,2,3,4-tetrahydroquinoline-4-carboxylic acid (CAS 1269533-15-4)
- 5-Cyclopropoxy-N-methyl-2-(methylthio)pyridin-4-amine (CAS 1243479-67-5)
- ethyl 2-(chloromethyl)-4-methylpyridine-3-carboxylate hydrochloride (CAS 2060024-96-4)
- [S(R)]-N-[(1R)-1-[2-((tert-Butyldiphenylsilyl)oxy)phenyl)]-2-yl-2-(diphenylphosphino)ethyl]-2-methyl-2-propanesulfinamide (CAS 1803239-58-8)
- 6-(3,5-Bis(trifluoromethyl)phenyl)picolinaldehyde (CAS 887979-45-5)
- 2-(2-Benzyl-6-oxo-1,6-dihydropyrimidin-5-yl)acetic acid (CAS 896939-11-0)
- 4-(3-chlorophenyl)-4-methylpiperidine hydrochloride (CAS 1803581-63-6)
- 4-aminobenzothiophene-2-carboxylic acid (CAS 478076-38-9)
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