Ethyl 3-ureido-1H-pyrrole-2-carboxylate CAS 939979-34-7
| CAS No. | 939979-34-7 |
| Molecular Formula | C8H11N3O3 |
| Molecular Weight | 197.19 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
Ethyl 3-ureido-1H-pyrrole-2-carboxylate (CAS 939979-34-7), molecular formula C8H11N3O3 and molecular weight 197.19 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C8H11N3O3, Ethyl 3-ureido-1H-pyrrole-2-carboxylate contains an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 197.19 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
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 | C8H11N3O3 |
| Molecular Weight | 197.19 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, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 3 |
Related Ethyl Standards
- 2-Ureido-6,7-dihydro-5H-pyrrolo[1,2-a]imidazole-3-carboxylic acid (CAS 767316-89-2)
- 1-Methyl-4-ureido-1H-imidazole-5-sulfonamide (CAS 6339-58-8)
- (2-Ureido-acetylamino)-acetic acid (CAS 17303-54-7)
- (5-Phenyl-2-ureido)thiophene-3-carboxamide (CAS 354811-10-2)
- 4-Ureido-[2,3'-bithiophene]-5-carboxamide (CAS 354810-98-3)
- Ethyl 2-ureido-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxylate (CAS 100068-52-8)
- Beta-Ureido-L-alpha-tosylaminopropionic Acid (CAS 1195628-02-4)
- 3-N-Ureido Tobramycin (CAS CATO-C4X-220011)
Recommended Standards
- Ethyl 3-hydroxy-6-methyl-2-oxo-1,2-dihydropyridine-4-carboxylate (CAS 267876-32-4)
- Ethyl 4-amino-2-methoxypyrimidine-5-carboxylate (CAS 7356-61-8)
- Ethyl 3-ethyl-5-oxo-2,5-dihydro-1,2,4-triazine-6-carboxylate (CAS 36286-81-4)
- Ethyl 4-hydroxy-2-methyl-6-oxo-1,6-dihydropyridine-3-carboxylate (CAS 3950-10-5)
- 2-(3-(2,6-Difluorophenyl)-1,2,4-oxadiazol-5-yl)aniline (CAS 1708250-77-4)
- 1-(1-(3-Chlorophenyl)ethyl)piperidin-4-ol (CAS 1146080-11-6)
- 7-Hydroxy-1,3-benzodioxole-5-carboxylic Acid Methyl Ester (CAS 116119-01-8)
- SB-525334 (CAS 356559-20-1)
- 5-Phenylpyrimidine-2-thiol (CAS 31408-19-2)
- Ethyl 2-benzoyl-4-(4-bromophenyl)-4-oxobutanoate (CAS 29113-49-3)
- (4-Chloro-3,5-difluorophenyl)methanamine (CAS 1554835-80-1)
- 2-Bromo-4-ethynyl-1-fluorobenzene (CAS 918487-39-5)
- Ethyl 4-(piperidin-1-yl)-2-(pyridin-4-yl)pyrimidine-5-carboxylate (CAS 823792-81-0)
- Semaglutide impurity 250 (CAS CATO-C4X-2226250)
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