4,6-Dimethoxypyrimidine-2-carboxylic Acid CAS 128276-50-6
| CAS No. | 128276-50-6 |
| Molecular Formula | C7H8N2O4 |
| Molecular Weight | 184.15 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
4,6-Dimethoxypyrimidine-2-carboxylic Acid (CAS 128276-50-6) is a high-purity analytical reference standard with the molecular formula C7H8N2O4 and a molecular weight of 184.15 g/mol.
Owing to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage, 4,6-Dimethoxypyrimidine-2-carboxylic Acid is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 184.15 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C7H8N2O4 |
| Molecular Weight | 184.15 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, water |
| 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 Dimethoxypyrimidine Standards
- 2,4-Dimethoxypyrimidine-5-carboxylic acid (CAS 110821-07-3)
- 2,4-Dimethoxypyrimidine-6-carboxylic acid 2,6-Dimethoxypyrimidine-4-carboxylic acid 4-Carboxy-2,6-dimethoxypyrimidine 59864-30-1 (CAS 59864-30-1)
- 2,6-Dimethoxypyrimidine-4-boronic Acid (CAS 852362-23-3)
- 2,4-Dimethoxypyrimidine-5-boronic acid 2,4-dimethoxypryimidine-5-boronic acid (2,4-dimethoxypyrimidin-5-yl)boronic acid (2,4-dimethoxypyrimidin-5-yl)boranediol 2,4-dimethoxy-5-pyrimidineboronic acid 89641-18-9 (CAS 89641-18-9)
- 4,6-dimethoxypyrimidine-5-carboxylic acid (CAS 4319-93-1)
- 4,6-Dimethoxypyrimidine-2-thiol (CAS 57235-35-5)
- 4,6-dimethoxypyrimidine-2-carbonitrile (CAS 139539-63-2)
- 4,6-Dimethoxypyrimidine-2-methanol (CAS 125966-88-3)
Recommended Standards
- 2-(4-Methyl-2,3-dioxo-3,4-dihydropyrazin-1(2H)-yl)acetic acid (CAS 1275729-79-7)
- 3,5-Dimethoxypyrazine-2-carboxylic acid (CAS 1286756-62-4)
- 1-(2-(Methylamino)-2-oxoethyl)-1H-1,2,3-triazole-4-carboxylic acid (CAS 1267889-21-3)
- Methyl N-methyl-5-nitro-2-pyrrolecarboxylate (CAS 13138-75-5)
- 1-Ethynyl-4-methoxy-2-(trifluoromethyl)benzene (CAS 2229518-36-7)
- Tert-butyl (S)-4-iodo-2-isopropyl-2,3-dihydro-1H-pyrrolo[2,3-b]pyridine-1-carboxylate (CAS 2366997-14-8)
- 1-(1-(4-Chlorophenyl)-2-methylpropan-2-yl)urea (CAS 15240-59-2)
- 5-(piperidin-4-yl)-1,2,4-oxadiazole-3-carboxamide (CAS 1334147-59-9)
- 2-((Tert-butoxycarbonyl)amino)-2-(4-hydroxycyclohexyl)acetic acid (CAS 1822530-85-7)
- 3-Chloro-5-((4-ethylpiperazin-1-yl)sulfonyl)pyridin-4-ol (CAS 1352507-48-2)
- n-(2-(Cyclopropylamino)-2-oxoethyl)-2-hydroxy-4-methylbenzamide (CAS 1155642-67-3)
- N-(4-Chloro-2-methylphenyl)-2-(5-(thiophen-3-yl)-1,3,4-oxadiazol-2-yl)acetamide (CAS 1286703-58-9)
- 1-Methoxy-9H-xanthen-9-one (CAS 6563-60-6)
- Semaglutide Impurity 148 (CAS CATO-C4X-2226148)
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