4-(3-methoxycarbonyl-2H-chromen-6-yl)but-3-ynoic acid CAS 2550903-41-6
| CAS No. | 2550903-41-6 |
| Molecular Formula | C15H18O5 |
| Molecular Weight | 278.30 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
4-(3-methoxycarbonyl-2H-chromen-6-yl)but-3-ynoic acid (CAS 2550903-41-6) is a high-purity analytical reference standard with the molecular formula C15H18O5 and a molecular weight of 278.30 g/mol.
4-(3-methoxycarbonyl-2H-chromen-6-yl)but-3-ynoic acid (C15H18O5) contains a flavonoid core, 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. 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 | C15H18O5 |
| Molecular Weight | 278.30 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2001 |
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Recommended Standards
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- Ethyl 2,2-difluoro-3-(methylamino)propanoate (CAS 1346597-51-0)
- Palladium, dichlorobis(4,5-dihydro-2-phenyloxazole-κN3)-, (SP-4-1)- (CAS 287943-22-0)
- Dopamine impurity 120 (CAS 3490-09-3)
- 4-Bromo-2-(3-fluorophenyl)-5-methylpyridazin-3(2H)-one (CAS 68143-26-0)
- 4-(4-Fluorophenyl)-2-methylthiazol-5-amine (CAS 1247352-84-6)
- 4-(Hydroxymethyl)nicotinonitrile (CAS 157650-27-6)
- 2-{[5-(4-methylphenyl)-4h-1,2,4-triazol-3-yl]sulfanyl}acetic acid (CAS 132895-42-2)
- Des-Ile27-Tirzepatide (CAS CATO-CPTD788946)
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