1-(2,4-Dichlorobenzyl)-4-nitro-1h-pyrazole CAS 90723-90-3
| CAS No. | 90723-90-3 |
| Molecular Formula | C10H7Cl2N3O2 |
| Molecular Weight | 272.09 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
1-(2,4-Dichlorobenzyl)-4-nitro-1h-pyrazole (CAS 90723-90-3), molecular formula C10H7Cl2N3O2 and molecular weight 272.09 g/mol, is a CATO reference standard with documented purity and traceability.
1-(2,4-Dichlorobenzyl)-4-nitro-1h-pyrazole (C10H7Cl2N3O2) 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. 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.
CATO manufactures 1-(2,4-Dichlorobenzyl)-4-nitro-1h-pyrazole 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 | C10H7Cl2N3O2 |
| Molecular Weight | 272.09 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, faint amine-like odor, low volatility) |
| 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 DMSO, DMF, methanol |
| 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1982 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 3 |
Related Dichlorobenzyl Standards
- 1-(3,4-Dichlorobenzyl)-1H-1,2,3-triazole-4-carboxylic acid (CAS 1111881-85-6)
- 1-(2,4-Dichlorobenzyl)-3-nitro-1h-pyrazole (CAS 956242-20-9)
- 1-(2,6-Dichlorobenzyl)-4-nitro-1h-pyrazole (CAS 400877-63-6)
- 2-(2,6-Dichlorobenzyl)oxazole-4-carboxylic Acid (CAS 736971-96-3)
- 1-(1-(2,4-Dichlorobenzyl)-1H-1,2,3-triazol-4-yl)ethan-1-ol (CAS 1443291-21-1)
- 1-(2,4-Dichlorobenzyl)-N,N-dimethyl-1H-tetrazol-5-amine (CAS 338417-33-7)
- 6-(2,4-Dichlorobenzyl)pyridazine-3(2H)-thione (CAS 241132-58-1)
- 1-(2,4-Dichlorobenzyl)-1H-pyrazole-4-carboxylic acid (CAS 1006494-87-6)
Recommended Standards
- 1-(2,5-dichlorophenyl)-5-methyl-1H-1,2,4-triazole-3-carboxylic acid (CAS 338398-22-4)
- {4-[5-(Thiophen-2-yl)-1,2,4-oxadiazol-3-yl]phenyl}boronic acid (CAS 2377608-39-2)
- {3-[5-(Thiophen-2-yl)-1,3,4-oxadiazol-2-yl]phenyl}boronic acid (CAS 2377609-61-3)
- 1-(3,5-Dichlorophenyl)-5-methyl-1H-1,2,4-triazole-3-carboxylic acid (CAS 338408-13-2)
- 2-(3-Amino-4-methyl-1h-pyrazol-1-yl)-N-ethyl-N-methylacetamide (CAS 1343764-81-7)
- tert-Butyl 3-(4-bromo-1H-pyrazol-1-yl)pyrrolidine-1-carboxylate (CAS 1201657-89-7)
- 6-Chloro-2-(4-methoxyphenyl)imidazo[1,2-b]pyridazine (CAS 1844-55-9)
- (2S)-2-chloro-N-[(1R)-1-phenylethyl]propanamide (CAS 1687750-35-1)
- 2-Ethyl 5-methyl 3-methyl-1H-indole-2,5-dicarboxylate (CAS 66552-40-7)
- (3S)-4-(1-benzothiophen-3-yl)-3-(9H-fluoren-9-ylmethoxycarbonylamino)butanoic acid (3S)-4-(1-benzothiophen-3-yl)-3-[[9H-fluoren-9-ylmethoxy(oxo)methyl]amino]butanoic acid (3S)-4-(benzothiophen-3-yl)-3-(9H-fluoren-9-ylmethoxycarbonylamino)butanoic acid (3S)-4-(benzothiophen-3-yl)-3-(9H-fluoren-9-ylmethoxycarbonylamino)butyric acid 270063-46-2 Fmoc-(S)-3-Amino-4-(3-benzothienyl)-butyric acid (CAS 270063-46-2)
- tert-butyl 3-(2-hydroxyethyl)piperazine-1-carboxylate (CAS 1188265-73-7)
- Fmoc-N-Me-Val-OH (CAS 84000-11-3)
- 2-(Benzo[d]thiazol-2-yl)malonaldehyde (CAS 40070-83-5)
- Acetyl-Tau Peptide (273-284) amide trifluoroacetate salt (CAS 1684399-52-7)
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