Naphthol AS-BI β-D-galactopyranoside CAS 51349-63-4
| CAS No. | 51349-63-4 |
| Molecular Formula | C24H24BrNO8 |
| Molecular Weight | 534.35 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Naphthol AS-BI β-D-galactopyranoside is closely related to a flavonoid core, an amide group, a hydroxyl group, an ether linkage, bromine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
Naphthol AS-BI β-D-galactopyranoside (CAS 51349-63-4), molecular formula C24H24BrNO8 and molecular weight 534.35 g/mol, is a CATO reference standard with documented purity and traceability.
Naphthol AS-BI β-D-galactopyranoside (C24H24BrNO8) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage, bromine substitution. Halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), Naphthol AS-BI β-D-galactopyranoside 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 | C24H24BrNO8 |
| Molecular Weight | 534.35 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 13.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1971 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 1 |
Related Naphthol Standards
- 1,1′-Di-2-naphthol bis(trifluoromethanesulfonate) (CAS 128575-34-8)
- Naphthol AS-BI N-acetyl-b-D-galactosaminide (CAS 59985-23-8)
- Naphthol AS-Br (CAS 91-92-9)
- Naphthol AS-BI Phosphate (CAS 1919-91-1)
- 1-Naphthol 2,3,4-Tri-O-acetyl-β-D-glucuronide Methyl Ester (CAS 18404-55-2)
- Naphthol AS Nonanoate (CAS 10523-82-7)
- Naphthol AS-TR phosphate (CAS 2616-72-0)
- Naphthol AS-MX Phosphate (CAS 1596-56-1)
Recommended Standards
- 2-((4-(4-Bromophenyl)-5-(pyridin-4-yl)-4H-1,2,4-triazol-3-yl)thio)-N-(3-(trifluoromethyl)phenyl)acetamide (CAS 477329-21-8)
- H-Gly-p-iodo-Phe-Trp-OH (CAS 347894-24-0)
- 2-((4-(4-Bromophenyl)-5-(pyridin-4-yl)-4H-1,2,4-triazol-3-yl)thio)-N-(2-(trifluoromethyl)phenyl)acetamide (CAS 477330-66-8)
- Praliciguat (CAS 1628730-49-3)
- 2-(2,4,6-Trimethylbenzenesulfonamido)acetic acid (CAS 313252-46-9)
- 2-Bromo-5-iodo-3-(trifluoromethyl)pyridine (CAS 1805025-71-1)
- 6-Bromo-3H-imidazo[4,5-b]pyridine-2-carboxylic acid (CAS 954217-62-0)
- N-[Cyano(3-fluorophenyl)methyl]acetamide (CAS 866136-30-3)
- Methyl 3-[(4-chloro-2-cyanophenoxy)methyl]benzoate (CAS 1417569-36-8)
- tert-Butyl (5-bromo-6-fluoropyridin-2-yl)carbamate (CAS 1444004-73-2)
- Methanesulfonic acid ((R)-1-((S)-2-amino-3-methylbutanoyl)pyrrolidin-2-yl)boronic acid (CAS 150080-09-4)
- 3-Methoxyisoxazole-5-carboxamide (CAS 16880-10-7)
- (S)-1-(2-chloro-5-(trifluoromethyl)phenyl)-2-methoxyethan-1-amine (CAS 1270008-96-2)
- [3-31]-Semaglutide D (Sodium salt) (CAS CATO-C4X-2226119)
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