1-cyclopropyl-2-methyl-1H-pyrrole-3-carboxylic acid CAS 1499520-27-2
| CAS No. | 1499520-27-2 |
| Molecular Formula | C9H11NO2 |
| Molecular Weight | 165.19 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.
1-cyclopropyl-2-methyl-1H-pyrrole-3-carboxylic acid (CAS 1499520-27-2), molecular formula C9H11NO2 and molecular weight 165.19 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 1-cyclopropyl-2-methyl-1H-pyrrole-3-carboxylic acid (C9H11NO2) is characterized by an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. 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. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
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 | C9H11NO2 |
| Molecular Weight | 165.19 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 |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1992 |
| Nitrogen Atoms | 1 |
Related cyclopropyl Standards
- N-Cyclopropyl-1-methyl-1H-pyrazole-5-carboxamide (CAS 1052622-09-9)
- 3-Cyclopropyl-1-methyl-1H-pyrazole-5-carboxamide (CAS 1172483-17-8)
- Methyl 4-cyclopropyl-1H-pyrrole-2-carboxylate (CAS 1263082-23-0)
- 5-Cyclopropyl-N-methyl-1H-pyrazole-3-carboxamide (CAS 1291012-89-9)
- 2-Cyclopropyl-5-methoxypyrimidin-4-amine (CAS 1554289-85-8)
- 1-Cyclopropyl-4-hydroxy-6-methyl-1,2-dihydropyridin-2-one (CAS 886185-99-5)
- 4-Cyclopropyl-6-methoxypyrimidin-2-amine (CAS 21666-65-9)
- 5-Cyclopropyl-4-methoxypyrimidin-2-amine (CAS 2654761-48-3)
Recommended Standards
- Methyl o-tolylcarbamate (CAS 14983-92-7)
- 2-(3-Methylpyridin-4-yl)propanoic acid (CAS 1501429-95-3)
- 3-(Pyrimidin-2-yloxy)cyclobutan-1-amine (CAS 1497318-34-9)
- 3-(1,5-Dimethyl-1h-pyrazol-4-yl)-3-hydroxypropanenitrile (CAS 1501551-06-9)
- 2,6-Dichloro-3-Iodopyridine (CAS 148493-37-2)
- (5-Bromo-3-fluoro-2-hydroxyphenyl)(phenyl)methanone (CAS 1457938-49-6)
- 2-Chloromethyl-7-(trifluoromethyl)benzo[d]thiazole, 97% (CAS 1247348-75-9)
- 2-(3-Fluoro-5-methylpyridin-2-yl)ethan-1-amine (CAS 1263057-58-4)
- Posaconazole Impurity 270 (CAS 55743-71-0)
- 2,5-Dichloro-3,6-dimethylbenzene-1-sulfonyl chloride (CAS 854860-52-9)
- 2-Chloro-6-methyl-3,7-dihydro-4H-pyrrolo[2,3-d]pyrimidin-4-one (CAS 1355174-81-0)
- Oseltamivir Impurity 129 (CAS CATO-C4X-1720129)
- (R)-1-Aminospiro[2.2]pentane-1-carboxylic acid (CAS 259097-27-3)
- Tau Peptide (274-288) trifluoroacetate salt (CAS 330456-39-8)
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