Fluorescein mono-β-D-galactopyranoside CAS 102286-67-9
| CAS No. | 102286-67-9 |
| Molecular Formula | C26H22O10 |
| Molecular Weight | 494.45 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 Fluorescein mono-β-D-galactopyranoside (CAS 102286-67-9), a certified reference material (molecular formula C26H22O10, MW 494.45 g/mol) for analytical method development and quality control.
Based on its molecular formula C26H22O10, Fluorescein mono-β-D-galactopyranoside contains a carboxylic acid group, a hydroxyl group, an ether linkage, a polycyclic aromatic system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 494.45 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 | C26H22O10 |
| Molecular Weight | 494.45 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at room temperature, 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) | 16.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1986 |
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Recommended Standards
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- (4-Methyloxazol-2-yl)methanamine (CAS 1108725-99-0)
- 1-(4-Ethylphenyl)-4-(1-methyl-1H-benzo[d]imidazol-2-yl)pyrrolidin-2-one (CAS 847394-58-5)
- Lifitegrast Impurity 134 (CAS CATO-C4X-2409134)
- (2-Methyl-1-phenyl-1h-imidazol-5-yl)methanol (CAS 1354962-56-3)
- Semaglutide impurity 236 (CAS CATO-C4X-2226236)
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