Alizarin CAS 72-48-0
| CAS No. | 72-48-0 |
| Molecular Formula | C14H8O4 |
| Molecular Weight | 240.21 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Alizarin is closely related to a carboxylic acid group, a hydroxyl group, an ether linkage, a polycyclic aromatic system in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies Alizarin (CAS 72-48-0), a certified reference material (molecular formula C14H8O4, MW 240.21 g/mol) for analytical method development and quality control.
The molecular framework of Alizarin (C14H8O4) is characterized by a carboxylic acid group, a hydroxyl group, an ether linkage, a polycyclic aromatic system. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), 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).
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), Alizarin 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 | C14H8O4 |
| Molecular Weight | 240.21 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
Related Alizarin Standards
- Alizarin 1-methyl ether (CAS 6170-06-5)
- Alizarin yellow gg indicator (10.0-12.1) (CAS 584-42-9)
- Alizarin complex indicator (CAS 3952-78-1)
- Acid Alizarin Blue BB (CAS 10114-40-6)
- Alizarin Red S (CAS 130-22-3)
- Alizarin Blue Black B (CAS 1324-21-6)
- Alizarin Yellow R, Sodium Salt (CAS 1718-34-9)
- Acid Alizarin Violet N (CAS 2092-55-9)
Recommended Standards
- Eucomic acid (CAS 60449-48-1)
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- Thiazafluron (CAS 25366-23-8)
- 4-([1,2,4]triazolo[4,3-a]pyrimidin-3-yl)benzoic acid (CAS 1018588-63-0)
- 4-Bromo-1-methyl-3-(trifluoromethyl)-1H-pyrazole (CAS 497832-99-2)
- 2-((5-(Trifluoromethyl)pyridin-2-yl)sulfonyl)acetonitrile (CAS 845266-24-2)
- Ethyl 6-fluoro-1H-pyrrolo[3,2-b]pyridine-3-carboxylate (CAS 1615714-29-8)
- 3-(Bromomethyl)-7-methoxy-2H-chromen-2-one (CAS 133932-20-4)
- 2-(5-(2-Methoxyphenyl)-1,3,4-oxadiazol-2-yl)aniline (CAS 1416341-34-8)
- Crizotinib impurity 22 (CAS 3469-69-0)
- 3-(Methylthio)-N-(4-(pyridin-3-yl)thiazol-2-yl)benzamide (CAS 896356-41-5)
- 2,2′-(5-Bromo-1,3-phenylene)bis[pyridine] (CAS 150239-89-7)
- (3-(Furan-2-yl)-1,2,4-oxadiazol-5-yl)methanamine (CAS 937665-94-6)
- Hexapeptide-11 (CAS 100684-36-4)
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