1-(2-Chlorophenyl)-3-(ethoxycarbonyl)-5-methyl-4,5-dihydro-1h-pyrazole-5-carboxylic acid CAS 1264046-73-2
| CAS No. | 1264046-73-2 |
| Molecular Formula | C14H15ClN2O4 |
| Molecular Weight | 310.73 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies 1-(2-Chlorophenyl)-3-(ethoxycarbonyl)-5-methyl-4,5-dihydro-1h-pyrazole-5-carboxylic acid (CAS 1264046-73-2), a certified reference material (molecular formula C14H15ClN2O4, MW 310.73 g/mol) for analytical method development and quality control.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, chlorine substitution, 1-(2-Chlorophenyl)-3-(ethoxycarbonyl)-5-methyl-4,5-dihydro-1h-pyrazole-5-carboxylic acid is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 310.73 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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.
Physical & Chemical Properties
| Molecular Formula | C14H15ClN2O4 |
| Molecular Weight | 310.73 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 |
| 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.) | 1990 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Chlorophenyl Standards
- 1-(3-Chlorophenyl)-3-(ethoxycarbonyl)-5-methyl-4,5-dihydro-1h-pyrazole-5-carboxylic acid (CAS 1264044-19-0)
- 1-(4-Chlorophenyl)-3-(ethoxycarbonyl)-5-methyl-4,5-dihydro-1h-pyrazole-5-carboxylic acid (CAS 1264048-83-0)
- 1-(3-Chlorophenyl)-2-((8-hydroxyquinolin-5-yl)imino)ethanone (CAS 26873-14-3)
- 2-{[(4-chlorophenyl)methyl]amino}-N-(2,4-difluorophenyl)acetamide (CAS 329079-53-0)
- 5-[(4-Chlorophenyl)methyl]-8-oxa-3,5-diazatricyclo[7.4.0.0^{2,7}]trideca-1(9),2(7),3,10,12-pentaen-6-one (CAS 864923-27-3)
- Ethyl 5-{[(2-chlorophenyl)formamido]methyl}-4,5-dihydro-1,2-oxazole-3-carboxylate (CAS 339100-99-1)
- 3-(4-Chlorophenyl)-2-methyl-[1,2,4]triazolo[5,1-b]quinazolin-9(3H)-one (CAS 95353-74-5)
- N-(2-Chlorophenyl)-5-(methylsulfonyl)picolinamide (CAS 1380672-71-8)
Recommended Standards
- 1-(5-Chloro-2-methylphenyl)-3-(ethoxycarbonyl)-4,5-dihydro-1h-pyrazole-5-carboxylic acid (CAS 1264041-75-9)
- 1-tert-Butyl 2-methyl 4-chloro-1H-pyrrolo[3,2-c]pyridine-1,2-dicarboxylate (CAS 1418287-34-9)
- Methyl 6-(chloromethyl)-4-(4-methoxyphenyl)-2-oxo-1,2,3,4-tetrahydropyrimidine-5-carboxylate (CAS 1260904-42-4)
- (E)-4-[5-(Butyrylamino)-2-chloroanilino]-4-oxo-2-butenoic acid (CAS 940106-84-3)
- MB-11362, >98% (HPLC) (CAS 1159183-97-7)
- 5,6-Difluoro-2-hydrazinyl-1-methyl-1H-benzo[d]imidazole (CAS 211734-87-1)
- 1,4-Bis((diphenylphosphaneyl)oxy)butane (CAS 10274-30-3)
- 2-Ethoxy-N'-hydroxyethanimidamide (CAS 1017025-53-4)
- 6-(3-Fluorobenzyl)-2,5,7-trimethylpyrazolo[1,5-a]pyrimidine (CAS 439111-21-4)
- (1-(2-Methyl-1H-pyrrolo[2,3-b]pyridin-1-yl)cyclopentyl)methanol (CAS 2173992-10-2)
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- pyrimidine-4-carbothioamide (CAS 88891-74-1)
- 2-Fluoro-3-(3-(trifluoromethoxy)phenyl)pyridine (CAS 1261725-31-8)
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