4-Ethyl-2-methylpyrimidine-5-carboxylic acid CAS 127958-06-9
| CAS No. | 127958-06-9 |
| Molecular Formula | C8H10N2O2 |
| Molecular Weight | 166.18 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4-Ethyl-2-methylpyrimidine-5-carboxylic acid (CAS 127958-06-9) is a high-purity analytical reference standard with the molecular formula C8H10N2O2 and a molecular weight of 166.18 g/mol.
Based on its molecular formula C8H10N2O2, 4-Ethyl-2-methylpyrimidine-5-carboxylic acid 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 166.18 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
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 | C8H10N2O2 |
| Molecular Weight | 166.18 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 DMSO, DMF, methanol |
| 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.) | 1993 |
| Nitrogen Atoms | 2 |
Related Ethyl Standards
- Ethyl 4-Methylpyrimidine-5-carboxylate (CAS 110960-73-1)
- Ethyl 4-methylpyrimidine-2-carboxylate (CAS 1196156-62-3)
- 2-Ethyl-4-methylpyrimidine-5-carboxylic acid (CAS 1239782-97-8)
- 2-Ethyl-6-methylpyrimidine-4-carboxylic acid (CAS 1282424-17-2)
- Ethyl 5-methylpyrimidine-2-carboxylate (CAS 142730-00-5)
- Ethyl 5-methylpyrimidine-4-carboxylate (CAS 142730-01-6)
- Ethyl 6-methylpyrimidine-4-carboxylate (CAS 148149-29-5)
- 4-Ethyl-6-methylpyrimidine-5-carboxylic acid (CAS 832090-48-9)
Recommended Standards
- Methyl 6-amino-4-methylpicolinate (CAS 1266119-24-7)
- 4-oxo-3H,4H-pyrrolo[2,1-f][1,2,4]triazine-5-carbonitrile (CAS 1263282-47-8)
- 3-Cyclopropyl-5-methyl-1H-pyrazole-4-carboxylic acid (CAS 1287752-79-7)
- Methyl 3-amino-4-methylpicolinate (CAS 1263059-97-7)
- 2-Bromomethyl-3-iodo-6-(trifluoromethyl)pyridine (CAS 1233065-75-2)
- 3-Methyl-2-(1-methylpiperidin-4-yl)-6-(pyridin-4-yl)pyrimidin-4(3H)-one (CAS 831231-83-5)
- 5-(((1-Phenyl-1H-imidazol-2-yl)thio)methyl)-3-(m-tolyl)-1,2,4-oxadiazole (CAS 1111965-90-2)
- 6-Amino-1H-phenalen-1-one (CAS 70402-14-1)
- 6-Amino-5-(chloromethyl)-4-(difluoromethyl)picolinic acid (CAS 1805013-73-3)
- 3-(Ethoxymethyl)piperidine hydrochloride (CAS 956324-36-0)
- 3-(Chloromethyl)-3-(4-fluorophenyl)oxetane (CAS 1393563-35-3)
- isooctyl alcohol (mixture of isomers) (CAS 26952-21-6)
- 2-(2-Chlorophenyl)oxazole (CAS 62881-98-5)
- Semaglutide impurity 275 (CAS CATO-C4X-2226275)
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