2-(2-Isopropoxyphenyl)-4-oxo-4H-chromene-6-carboxylic acid CAS 57009-15-1
| CAS No. | 57009-15-1 |
| Molecular Formula | C19H16O5 |
| Molecular Weight | 324.33 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies 2-(2-Isopropoxyphenyl)-4-oxo-4H-chromene-6-carboxylic acid (CAS 57009-15-1), a certified reference material (molecular formula C19H16O5, MW 324.33 g/mol) for analytical method development and quality control.
2-(2-Isopropoxyphenyl)-4-oxo-4H-chromene-6-carboxylic acid (C19H16O5) 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).
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.
Physical & Chemical Properties
| Molecular Formula | C19H16O5 |
| Molecular Weight | 324.33 g/mol |
| Appearance | Pale yellow to 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) | 12.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1973 |
Related Isopropoxyphenyl Standards
- 2-(3-Isopropoxyphenyl)quinoline-4-carbonyl chloride (CAS 1160264-68-5)
- 2-(4-Isopropoxyphenyl)quinoline-4-carbonyl chloride (CAS 1160264-81-2)
- 2-(2-Isopropoxyphenyl)quinoline-4-carbonyl chloride (CAS 1160264-82-3)
- 2-(2-Isopropoxyphenyl)-8-methylquinoline-4-carboxylic acid (CAS 932928-82-0)
- 2-(2-Isopropoxyphenyl)quinoline-4-carbohydrazide (CAS 956576-43-5)
- 2-(3-Isopropoxyphenyl)-6-methylquinoline-4-carboxylic acid (CAS 438212-49-8)
- 2-(3-Isopropoxyphenyl)-8-methylquinoline-4-carboxylic acid (CAS 932841-21-9)
- 2-(3-Isopropoxyphenyl)quinoline-4-carbohydrazide (CAS 524733-45-7)
Recommended Standards
- 2-(2,3-Dioxoindolin-1-yl)-N-(2-phenoxyethyl)acetamide (CAS 299919-84-9)
- 2-(4-Fluorophenylamino)naphtho[2,3-d]thiazole-4,9-dione (CAS 220333-06-2)
- 2-(1,3-Dioxoisoindolin-2-yl)-N-(2-ethoxyphenyl)acetamide (CAS 335207-97-1)
- 2-(6-(Methoxycarbonyl)-2-(p-tolyl)imidazo[1,2-a]pyridin-3-yl)acetic acid (CAS 917252-80-3)
- 4-Methyl-N-(1-(thiophen-2-yl)ethyl)pyridin-3-amine (CAS 1343989-02-5)
- 3-(Methoxymethoxy)phenol (CAS 18066-10-9)
- 1-[(4-chlorophenyl)methyl]-2,5-dihydro-1H-pyrrole-2,5-dione (CAS 34569-29-4)
- Methyl 6-(aminomethyl)-4-methylpicolinate (CAS 1393534-76-3)
- Dabigatran Impurity 48 (CAS 1304574-20-6)
- 4-Amino-N-methyl-1,2,5-selenadiazole-3-carboxamide (CAS 81366-75-8)
- 2-(Trifluoromethoxy)phenyl isothiocyanate (CAS 175205-33-1)
- 3-Hydroxy-5-nitrobenzonitrile (CAS 929000-02-2)
- 6-(4-Acetylpiperazin-1-yl)-5-methylnicotinaldehyde (CAS 1355236-53-1)
- Neuroendocrine Regulatory Peptide-1 (human) (H-6622.1000) (CAS 954420-50-9)
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