2-(9H-xanthen-9-yl)malonic acid CAS 101278-43-7
| CAS No. | 101278-43-7 |
| Molecular Formula | C16H12O5 |
| Molecular Weight | 284.26 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
2-(9H-xanthen-9-yl)malonic acid (C16H12O5) contains a flavonoid core, a hydroxyl group, an ether linkage. 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).
2-(9H-xanthen-9-yl)malonic acid (CAS 101278-43-7) is a high-purity analytical reference standard with the molecular formula C16H12O5 and a molecular weight of 284.26 g/mol.
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), 2-(9H-xanthen-9-yl)malonic acid 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 | C16H12O5 |
| Molecular Weight | 284.26 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) | 11.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1985 |
Related H Standards
- 3-(9H-Xanthen-9-yl)-1H-indole (CAS 53924-27-9)
- 5-(9H-Xanthen-9-yl)-1,3,4-oxadiazol-2-ol (CAS 87836-73-5)
- Xanthen-9-one, 5-hydroxy-1-methoxy- (CAS 27770-13-4)
- 2-(9h-Xanthen-9-yl)acetic acid (CAS 1217-58-9)
- 2-(3-(9H-Xanthen-9-yl)-1H-indol-1-yl)acetic acid (CAS 53924-18-8)
- (9H-xanthen-9-yl)methanol (CAS 5490-92-6)
- {2-[(9H-Xanthen-9-ylcarbonyl)amino]-1,3-thiazol-4-yl}acetic acid (CAS 931374-33-3)
- 9H-Xanthen-9-amine (CAS 35598-63-1)
Recommended Standards
- 2-Amino-2-deoxy-2-fluoroadenosine (CAS 134444-47-6)
- 6-(5-methylfuran-2-yl)-2-sulfanylidene-4-(trifluoromethyl)-1,2-dihydropyridine-3-carbonitrile (CAS 1014623-05-2)
- 5-Oxo-1-(4-Sulfophenyl)-4,5-Dihydro-1H-Pyrazole-3-Carboxylic Acid (CAS 118-47-8)
- Sappanone A (CAS 102067-84-5)
- 3-Ethyl 2-methyl 6-hydroxy-3,4-dihydroisoquinoline-2,3(1H)-dicarboxylate (CAS 134388-88-8)
- 6-Amino-2,2-difluorobenzo[d][1,3]dioxole-5-carbaldehyde (CAS 294619-52-6)
- 5-Phenylthiophene-2-boronic Acid Pinacol Ester (CAS 459409-74-6)
- Methyl 6-(aminomethyl)-2-methylpyridine-3-carboxylate (CAS 1108725-55-8)
- n-(2,3-Dimethylphenyl)tetrahydrothiophen-3-amine (CAS 1020940-19-5)
- Carfilzomib Impurity 68 (CAS CATO-C4X-102268)
- 2-(Tert-butyl) 3-methyl (3S,7R,8aR)-7-hydroxyhexahydropyrrolo[1,2-a]pyrazine-2,3(1H)-dicarboxylate (CAS 1266230-19-6)
- 1-[2-(3,5-dimethylpiperidin-1-yl)-2-oxoethyl]piperazine (CAS 871909-83-0)
- Donepezil Impurity 55 (CAS 1189443-74-0 (free base))
- Insulin Lispro (CAS 133107-64-9)
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