3-O-(2-Acetamido-2-deoxy-a-D-galactopyranosyl)-D-galactopyranose CAS 66781-75-7
| CAS No. | 66781-75-7 |
| Molecular Formula | C14H25NO11 |
| Molecular Weight | 383.35 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
3-O-(2-Acetamido-2-deoxy-a-D-galactopyranosyl)-D-galactopyranose (CAS 66781-75-7) is a high-purity analytical reference standard with the molecular formula C14H25NO11 and a molecular weight of 383.35 g/mol.
The molecular framework of 3-O-(2-Acetamido-2-deoxy-a-D-galactopyranosyl)-D-galactopyranose (C14H25NO11) is characterized by an amide group, a carboxylic acid group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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.
As a certified reference material (CRM), 3-O-(2-Acetamido-2-deoxy-a-D-galactopyranosyl)-D-galactopyranose meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C14H25NO11 |
| Molecular Weight | 383.35 g/mol |
| Appearance | 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, 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) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1976 |
| Nitrogen Atoms | 1 |
Related O Standards
- 2-Acetamido-2-deoxy-3-O-(α-D-galactopyranosyl)-D-galactopyranose (CAS 60283-31-0)
- 2-Acetamido-2-deoxy-3-O-(β-D-galactopyranosyl)-D-galactose (CAS 3554-90-3)
- 2-Acetamido-2-deoxy-3-O-(β-D-galactopyranosyl)-D-glucopyranose (CAS 50787-09-2)
- 2-Acetamido-2-deoxy-4-O-(β-D-galactopyranosyl)-D-galactopyranose (CAS 82535-18-0)
- 2-Acetamido-2-deoxy-4-O-(β-D-mannopyranosyl)-D-glucose (CAS 55637-63-3)
- 2-Acetamido-2-deoxy-6-O-(b-D-galactopyranosyl)-D-galactopyranose (CAS 209977-51-5)
- 2-O-(2-Acetamido-2-deoxy-β-D-glucopyranosyl)-D-mannopyranose (CAS 34621-73-3)
- 3-O-[2-Acetamido-2-deoxy-β-D-glucopyranosyl]-D-mannopyranose (CAS 210036-24-1)
Recommended Standards
- 4-O-(2-Acetamido-2-deoxy-α-D-glucopyranosyl)-D-galactose (CAS 76909-76-7)
- Galβ(1-3)GalNAc (CAS 20972-29-6)
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