7,8-Dihydroxycoumarin CAS 486-35-1
| CAS No. | 486-35-1 |
| Molecular Formula | C9H6O4 |
| Molecular Weight | 178.14 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.
7,8-Dihydroxycoumarin (CAS 486-35-1), molecular formula C9H6O4 and molecular weight 178.14 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C9H6O4, 7,8-Dihydroxycoumarin contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 178.14 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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 | C9H6O4 |
| Molecular Weight | 178.14 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, 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
Related Dihydroxycoumarin Standards
Recommended Standards
- 4-Nitro-1H-pyrrolo[2,3-b]pyridin-3-amine (CAS 1000340-42-0)
- 2-Keto-D-Glucose (CAS 1854-25-7)
- 6-Methyl-[1,2,4]triazolo[1,5-a]pyrimidine-2-carboxylic acid (CAS 1018144-12-1)
- Ninhydrin (CAS 485-47-2)
- Benzyl-2-Chloro-1,1,2-Trifluoroethyl Sulfide (CAS 82789-49-9)
- Methyl 1-cyclopentyl-6-cyclopropyl-1H-pyrazolo[3,4-b]pyridine-4-carboxylate (CAS 1018163-36-4)
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- 7-Methyl-DL-tryptophan (CAS 17332-70-6)
- (S)-tert-Butyl 1-(4-fluorobenzyl)pyrrolidin-3-ylcarbamate (CAS 457097-99-3)
- (2-Hydroxy-5-methylphenyl)thiourea (CAS 500284-61-7)
- Benzyl 2,3-dihydroxypropanoate (CAS 73573-57-6)
- 4-Oxo-3,4-dihydroquinazolin-7-yl acetate (CAS 179246-13-0)
- 5P0R38CN2X 7789-00-6 Potassium chromate Potassium chromate(VI) Chromic acid (H2CrO4), dipotassium salt Chromic acid, dipotassium salt Chromic acid (H2CrO4), potassium salt (1:2) Bipotassium chromate Caswell No. 687 CCRIS 882 Chromate of potash Chromate of potass Dipotassium chromate Dipotassium chromate (K2CrO4) Dipotassium monochromate EINECS 232-140-5 EPA Pesticide Chemical Code 068301 HSDB 1249 Neutral potassium chromate Potassium chromate (K2(CrO4)) Tarapacaite UNII-5P0R38CN2X EC 232-140-5 Potassium chromate [Chromium and chromium compounds] (CAS 7789-00-6)
- Semaglutide impurity 84 (CAS CATO-C4X-222684)
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