2-(6-Hydroxy-2-oxo-2h-chromen-4-yl)acetic acid CAS 68747-26-2
| CAS No. | 68747-26-2 |
| Molecular Formula | C11H8O5 |
| Molecular Weight | 220.18 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 2-(6-Hydroxy-2-oxo-2h-chromen-4-yl)acetic acid.
2-(6-Hydroxy-2-oxo-2h-chromen-4-yl)acetic acid (CAS 68747-26-2), molecular formula C11H8O5 and molecular weight 220.18 g/mol, is a CATO reference standard with documented purity and traceability.
2-(6-Hydroxy-2-oxo-2h-chromen-4-yl)acetic acid (C11H8O5) contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C11H8O5 |
| Molecular Weight | 220.18 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, ethanol, DMSO |
| 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.) | 1976 |
Related Hydroxy Standards
- 2-(7-Hydroxy-2-oxo-2H-chromen-3-yl)acetic acid (CAS 104093-04-1)
- 3-Hydroxy-1-methyl-6-nitroquinolin-2(1H)-one (CAS 1394843-51-6)
- 8-hydroxy-4-(2-hydroxyacetyl)-1H-isochromen-1-one (CAS 146-04-3)
- 2-(8-Hydroxy-3-oxo-3,4-dihydroquinoxalin-2-yl)acetic acid (CAS 495409-59-1)
- 3-[Hydroxy(3-pyridyl)methyl]isoxazole-4-carboxylic Acid (CAS 2006277-29-6)
- 4-Hydroxy-1-methyl-3-nitroquinolin-2(1h)-one (CAS 36949-55-0)
- 6-Hydroxy-4-methyl-2-oxo-2H-1-benzopyran-3-carboxylic acid (CAS 435297-35-1)
- Methyl 2-hydroxy-4-oxo-4h-pyrido[1,2-a]pyrimidine-3-carboxylate (CAS 224313-74-0)
Recommended Standards
- 2-(5-Nitro-1h-indol-1-yl)acetic acid (CAS 226901-50-4)
- 2-(5-Methyl-1,3,4-oxadiazol-2-yl)-4-nitroaniline (CAS 37536-74-6)
- 2-(furan-2-yl)-4-methyl-6-oxo-1,6-dihydropyrimidine-5-carboxylic acid (CAS 941166-92-3)
- 2-(4-Nitro-1h-indol-1-yl)acetic acid (CAS 594844-56-1)
- Ethyl 2-Methyl-4-oxo-2-cyclohexenecarboxylate (CAS 487-51-4)
- Methyl 4-bromo-2-chloro-6-formylbenzoate (CAS 1935411-81-6)
- [1,1'-Biphenyl]-3,4',5-triol (CAS 74276-54-3)
- 3-[5-(1-Acetyl-piperidin-4-yl)-pyrazin-2-yl]-propionic acid (CAS 1316219-51-8)
- Melphalan Impurity 25 (CAS CATO-C4X-198825)
- N-(sec-Butyl)-4,5-dichloro-2-methylbenzenesulfonamide (CAS 886124-81-8)
- methyl 3-[(2,5-difluorophenyl)sulfanyl]prop-2-enoate (CAS 1563957-23-2)
- 1-(6-(2-(Dimethylamino)ethoxy)-4,7-dimethoxybenzofuran-5-yl)ethanone (CAS 41225-90-5)
- Phenylephrine Impurity 101 (CAS 1312706-18-5)
- Nonapeptide-1 (CAS 158563-45-2)
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