Methyl 4-ethyl-5-methyl-1H-pyrrole-2-carboxylate CAS 203207-15-2
| CAS No. | 203207-15-2 |
| Molecular Formula | C9H13NO2 |
| Molecular Weight | 167.21 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Methyl 4-ethyl-5-methyl-1H-pyrrole-2-carboxylate (C9H13NO2) contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. 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.
Methyl 4-ethyl-5-methyl-1H-pyrrole-2-carboxylate (CAS 203207-15-2) is a high-purity analytical reference standard with the molecular formula C9H13NO2 and a molecular weight of 167.21 g/mol.
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.
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.
Physical & Chemical Properties
| Molecular Formula | C9H13NO2 |
| Molecular Weight | 167.21 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) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2015 |
| Nitrogen Atoms | 1 |
Recommended Standards
- Methyl 4-(1h-pyrrol-1-yl)butanoate (CAS 204767-29-3)
- Methyl 5-ethyl-4-methyl-1H-pyrrole-2-carboxylate (CAS 203207-17-4)
- Methyl 2-cyano-3,4-dimethylpent-2-enoate (CAS 6666-81-5)
- Methyl 5-propyl-1H-pyrrole-2-carboxylate (CAS 210841-59-1)
- 4-(4-Diethylamino-benzylidene)-2-methyl-1,2,3,4-tetrahydro-acridine-9-carboxylic acid (CAS 721413-97-4)
- 2-(2-Cyclohexylthiazol-4-yl)-7-methoxy-8-methylquinolin-4-ol (CAS 923605-10-1)
- 1-(3-methylbut-2-en-1-yl)piperidin-4-amine (CAS 1154550-36-3)
- Cenobamate Impurity 61 (CAS CATO-C4X-241661)
- N-methyl-1-(6-(thiophen-2-yl)-[1,2,4]triazolo[4,3-b]pyridazin-3-yl)methanamine (CAS 1892552-39-4)
- Methyl 2-[1-(diphenylmethyl)azetidin-3-yl]acetate (CAS 152537-00-3)
- 11-(4,6-Diphenyl-1,3,5-triazin-2-yl)-12-phenyl-11,12-dihydroindolo[2,3-a]carbazole (CAS 1024598-01-3)
- 2-{5h,6h,7h-pyrazolo[3,2-b][1,3]oxazin-3-yl}acetic acid (CAS 1365959-01-8)
- Dithizone (CAS 60-10-6)
- 149471-11-4 Neuropeptide DF2 L-Phenylalaninamide, L-alpha-aspartyl-L-arginyl-L-asparaginyl-L-phenylalanyl-L-leucyl-L-arginyl- Asp-arg-asn-phe-leu-arg-phe-NH2 Aspartyl-arginyl-asparaginyl-phenylalanyl-leucyl-arginyl-phenylalaninamide L-alpha-Aspartyl-L-arginyl-L-asparaginyl-L-phenylalanyl-L-leucyl-L-arginyl-L-phenylalaninamide DF(2) Neuropeptide Drnflrfamide (CAS 149471-11-4)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com