1-Ethyl-4-nitro-1H-pyrazole-5-carbonyl chloride CAS 1199215-97-8
| CAS No. | 1199215-97-8 |
| Molecular Formula | C6H6ClN3O3 |
| Molecular Weight | 203.58 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 1-Ethyl-4-nitro-1H-pyrazole-5-carbonyl chloride.
1-Ethyl-4-nitro-1H-pyrazole-5-carbonyl chloride (CAS 1199215-97-8) is a high-purity analytical reference standard with the molecular formula C6H6ClN3O3 and a molecular weight of 203.58 g/mol.
1-Ethyl-4-nitro-1H-pyrazole-5-carbonyl chloride (C6H6ClN3O3) contains an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system. 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).
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
CATO manufactures 1-Ethyl-4-nitro-1H-pyrazole-5-carbonyl chloride 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 | C6H6ClN3O3 |
| Molecular Weight | 203.58 g/mol |
| Appearance | Off-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) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1989 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
Related Ethyl Standards
- (5-Methyl-3-nitro-1h-pyrazol-1-yl)acetyl chloride (CAS 1006442-04-1)
- 1-Ethyl-4-nitro-1h-pyrazole-3-carbonyl chloride (CAS 1260658-93-2)
- 3-Nitro-4-fluorobenzoyl chloride (CAS 400-94-2)
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Recommended Standards
- 4-chloro-2-methoxy-6-nitrophenol (CAS 118724-89-3)
- 3-Chloro-6-(2,2-difluoroethyl)pyrazine-2-carbonitrile (CAS 1257072-46-0)
- 2-Chloro-N-(isoxazol-3-ylcarbamoyl)acetamide (CAS 112810-51-2)
- 6-Chloro-4-(difluoromethyl)-1H-pyrazolo[3,4-b]pyridine (CAS 1279829-79-6)
- 5-(difluoromethyl)-1-phenyl-1H-pyrazol-4-amine hydrochloride (CAS 1909337-82-1)
- 7-Fluoro-2-methyl-3,4-dihydro-2h-1,4-benzoxazine (CAS 515861-53-7)
- 3-(Piperazin-1-yl)propan-1-amine (CAS 34885-02-4)
- 2-Cyano-N-(4-ethylphenyl)-3-(4-methoxyphenyl)propanamide (CAS 1261020-83-0)
- Tetraisopropyl methylenediphosphonate (CAS 1660-95-3)
- 3-Amino-1-benzyl-4-(5-methylfuran-2-yl)azetidin-2-one (CAS 1291490-30-6)
- Phenylmethyl (3S)-3-(aminomethyl)-3,4-dihydro-2(1H)-isoquinolinecarboxylate (CAS 1187932-04-2)
- Eldecalcitol Impurity 2 (CAS 201854-22-0)
- 3,5-Diaminopyrazine-2-carboxylic acid (CAS 39939-29-2)
- Myristoyl Pentapeptide-4 (CAS 1392416-25-9)
Why CATO?
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