Naphthol AS-TR phosphate CAS 2616-72-0
| CAS No. | 2616-72-0 |
| Molecular Formula | C18H15ClNO5P |
| Molecular Weight | 391.74 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures Naphthol AS-TR phosphate under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Naphthol AS-TR phosphate (CAS 2616-72-0), molecular formula C18H15ClNO5P and molecular weight 391.74 g/mol, is a CATO reference standard with documented purity and traceability.
Naphthol AS-TR phosphate (C18H15ClNO5P) contains a flavonoid core, an amide group, a phosphate ester group, a hydroxyl group, an ether linkage, chlorine 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. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C18H15ClNO5P |
| Molecular Weight | 391.74 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 11.5 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 1 |
Related Naphthol Standards
- Naphthol AS-MX Phosphate (CAS 1596-56-1)
- Naphthol AS-G (CAS 91-96-3)
- Naphthol AS Nonanoate (CAS 10523-82-7)
- Naphthol AS-OL phosphate (CAS 84522-15-6)
- Naphthol AS-BI (CAS 1237-75-8)
- Naphthol AS Phosphate (CAS 13989-98-5)
- Naphthol AS-OL Acetate (CAS 7128-79-2)
- 1-Naphthol 2,3,4-Tri-O-acetyl-β-D-glucuronide Methyl Ester (CAS 18404-55-2)
Recommended Standards
- Ethyl 3-((3-chloro-5-(trifluoromethyl)pyridin-2-yl)(methyl)amino)-2,4-dioxo-3-azabicyclo[3.1.0]Hexane-6-carboxylate (CAS 318237-93-3)
- 5-(3-Chlorophenyl)-3-(4-fluorophenyl)-7-(trifluoromethyl)pyrazolo[1,5-a]pyrimidine (CAS 439096-17-0)
- 3-Chloro-N-((3-(2,6-difluorophenyl)-4,5-dihydroisoxazol-5-yl)methyl)-5-(trifluoromethyl)pyridin-2-amine (CAS 1209816-32-9)
- Dotinurad Impurity 109 (CAS 1285572-82-8)
- tert-Butyl (2-bromo-4-trifluoromethylphenoxy)acetate (CAS 779331-60-1)
- 10-Nitroanthracen-9(10H)-one (CAS 6313-44-6)
- N′-[3-(3-fluorophenyl)-2-(2-oxo-1-imidazolidinyl)propyl]-N,N-dimethylsulfamide (CAS 1421458-72-1)
- 1H-pyrazolo[3,4-b]pyridine, 4-chloro-4,7-dihydro- (CAS 344252-31-9)
- 6-(3,4-Difluorophenyl)pyrimidin-4-amine (CAS 1368656-99-8)
- 4-(Isoxazol-5-yl)benzoic acid (CAS 874778-87-7)
- 1,6-Dimethyl-1H-benzo[d][1,3]oxazin-2(4H)-one (CAS 1696777-45-3)
- 1-Methyl-3-propyl-1H-pyrazole-5-carbonyl chloride (CAS 717871-87-9)
- Finasteride Impurity 57 (CAS 3076606-73-7)
- Acetyl-Exenatide trifluoroacetate salt (CAS 305815-28-5)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com