4-Methylumbelliferyl N-acetyl-β-D-galactosaminide CAS 36476-29-6
| CAS No. | 36476-29-6 |
| Molecular Formula | C18H21NO8 |
| Molecular Weight | 379.36 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 379.36 g/mol gives 4-Methylumbelliferyl N-acetyl-β-D-galactosaminide distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
4-Methylumbelliferyl N-acetyl-β-D-galactosaminide (CAS 36476-29-6), molecular formula C18H21NO8 and molecular weight 379.36 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of 4-Methylumbelliferyl N-acetyl-β-D-galactosaminide (C18H21NO8) is characterized by a flavonoid core, an amide 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 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 | C18H21NO8 |
| Molecular Weight | 379.36 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 |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1967 |
| Nitrogen Atoms | 1 |
Related Methylumbelliferyl Standards
- 4-Methylumbelliferyl 2-acetamido-2-deoxy-α-D-galactopyranoside (CAS 124223-99-0)
- 4-Methylumbelliferyl 2-acetamido-2-deoxy-α-D-glucopyranoside (CAS 80265-04-9)
- 4-Methylumbelliferyl 2-Acetamido-2-deoxy-β-D-glucopyranoside (CAS 37067-30-4)
- 4-Methylumbelliferyl Phosphocholine (CAS 97055-84-0)
- 4-Methylumbelliferyl a-D-Galacturonic Acid (CAS 67968-37-0)
- 4-Methylumbelliferyl-alfa-L-Iduronide (CAS 66966-09-4)
- Bis(4-methylumbelliferyl)phosphate (CAS 51379-07-8)
- 4-Methylumbelliferyl Palmitate (CAS 17695-48-6)
Recommended Standards
- N-(6-Acetamidobenzo[d]thiazol-2-yl)-3-(trifluoromethyl)benzamide (CAS 330189-73-6)
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- 4-Methyl-2-(pyridin-4-yl)-N-[4-(trifluoromethoxy)phenyl]-1,3-thiazole-5-carboxamide (CAS 338396-94-4)
- Gefitinib Impurity 83 (CAS CATO-C4X-111783)
- 1-(Tert-butyl) 4-methyl 4-(chloromethyl)piperidine-1,4-dicarboxylate (CAS 1314319-01-1)
- 5-(chloromethyl)-3-isobutyl-1,2,4-oxadiazole (CAS 929973-39-7)
- 6-(3,4-Dimethoxyphenyl)-3-(phenoxymethyl)-[1,2,4]triazolo[3,4-b][1,3,4]thiadiazole (CAS 227945-50-8)
- 5-Bromo-6-(difluoromethyl)pyrimidine-2,4(1H,3H)-dione (CAS 1706456-91-8)
- Eperisone Impurity 49 TFA (CAS CATO-C4X-227949)
- 6-[(E)-2-(4-Methoxyphenyl)ethenyl]-2-methyl-2,3-dihydropyridazin-3-one (CAS 83516-73-8)
- 2,3,3-Trimethyl-5-phenyl-3H-indole (CAS 294655-87-1)
- 2-(2-Mercaptoethyl)phenol (CAS 13407-20-0)
- (4-Bromo-2-iodo-phenyl)-methanol (CAS 1261438-69-0)
- Semaglutide Impurity 185 (CAS CATO-C4X-2226185)
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