Ethyl 6-hydroxy-2-oxo-2H-chromene-3-carboxylate CAS 70160-51-9
| CAS No. | 70160-51-9 |
| Molecular Formula | C12H10O5 |
| Molecular Weight | 234.20 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Structurally, Ethyl 6-hydroxy-2-oxo-2H-chromene-3-carboxylate (C12H10O5) contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 234.20 g/mol, it falls into the medium-molecular-weight range. 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).
CATO supplies Ethyl 6-hydroxy-2-oxo-2H-chromene-3-carboxylate (CAS 70160-51-9), a certified reference material (molecular formula C12H10O5, MW 234.20 g/mol) for analytical method development and quality control.
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 | C12H10O5 |
| Molecular Weight | 234.20 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; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1977 |
Related Ethyl Standards
- Ethyl 7-hydroxy-2-oxo-2H-chromene-4-carboxylate (CAS 1084-45-3)
- Ethyl 4-hydroxy-2-oxo-2h-chromene-3-carboxylate (CAS 1821-20-1)
- 2-(7-Hydroxy-8-methyl-2-oxo-2h-chromen-4-yl)acetic acid (CAS 68747-36-4)
- 6-Acetyl-5-hydroxy-2-methylbenzofuran-3-carboxylic acid (CAS 63529-83-9)
- 7-Hydroxy-4-methylcoumarin-3-acetic acid (CAS 5852-10-8)
- 7-Hydroxy-5-methoxy-2-methyl-4-oxo-4H-chromene-6-carbaldehyde (CAS 7338-51-4)
- Ethyl 5-hydroxy-2-oxo-2H-chromene-3-carboxylate (CAS 70160-47-3)
- ethyl 7-hydroxy-4-oxo-4H-chromene-2-carboxylate (CAS 23866-72-0)
Recommended Standards
- Ethyl 5-(furan-2-carbonyl)furan-2-carboxylate (CAS 890100-54-6)
- Ethyl 8-hydroxy-4-oxo-4H-chromene-2-carboxylate (CAS 53873-72-6)
- Ethyl 5-(3-fluorophenyl)isoxazole-4-carboxylate (CAS 887408-00-6)
- Malvone A (CAS 915764-62-4)
- 3-Carboxy-4-methoxyphenylboronic acid pinacol ester (CAS 2121512-71-6)
- Ethyl 8-Chloro-4-oxo-4H-quinolizine-3-carboxlate (CAS 139161-20-9)
- n-Ethyl-3-(1,3,5-trimethyl-1h-pyrazol-4-yl)propanamide (CAS 1223187-43-6)
- 2-(Cyclohex-1-en-1-yl)-N-(cyclopropylmethyl)ethan-1-amine hydrochloride (CAS 1048640-45-4)
- Diethyl 2-(6-chloropyrazin-2-yl)malonate (CAS 930798-26-8)
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