Aspirin impurity 29 CAS 85539-30-6
| CAS No. | 85539-30-6 |
| Molecular Formula | C30H20O10 |
| Molecular Weight | 540.47 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Structurally, Aspirin impurity 29 (C30H20O10) contains a carboxylic acid group, a hydroxyl group, an ether linkage, a polycyclic aromatic system. The molecule exhibits a degree of unsaturation (DBE) of 21.0, corresponding to approximately 21 ring(s) or double-bond equivalent(s). With a molecular weight of 540.47 g/mol, it falls into the moderately-high-molecular-weight range. 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).
CATO supplies Aspirin impurity 29 (CAS 85539-30-6), a pharmacopoeial impurity reference standard (molecular formula C30H20O10, MW 540.47 g/mol) used for the identification and quantification of trace impurities in APIs.
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
As a certified reference material (CRM), Aspirin impurity 29 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 | C30H20O10 |
| Molecular Weight | 540.47 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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 |
| Degree of Unsaturation (DBE) | 21.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1981 |
Related Aspirin Standards
Recommended Standards
- 8-((2R,3S)-5,7-Dihydroxy-2-(4-hydroxyphenyl)-4-oxochroman-3-yl)-5,7-dihydroxy-2-(4-hydroxyphenyl)-4H-chromen-4-one (CAS 27542-37-6)
- Direct Yellow 26 (CAS 2829-42-7)
- 2,3-Dihydrohinokiflavone (CAS 34292-87-0)
- methyl (2S)-4-(3-((2R,3R,4S,5R)-3,4-dihydroxy-5-(hydroxymethyl)tetrahydrofuran-2-yl)-4,6-dimethyl-9-oxo-4,9-dihydro-3H-imidazo[1,2-a]purin-7-yl)-3-hydroperoxy-2-((methoxycarbonyl)amino)butanoate (CAS 78355-49-4)
- Methenamine Impurity 3 (CAS 185309-32-4)
- Ceftazidime EP Impurity E (CAS 102772-66-7)
- Levothyroxine EP Impurity C (CAS 51-24-1)
- N2-(m-tolyl)pyridine-2,3-diamine (CAS 176032-17-0)
- 2-(Naphthalen-1-yl)-1,3-dioxoisoindoline-5-carboxylic acid (CAS 202828-12-4)
- tert-Butyl 5-chloro-2-(chloromethyl)-1H-benzo[d]imidazole-1-carboxylate (CAS 251937-22-1)
- 4-Bromo-3,5-diethyl-1-((2-(trimethylsilyl)ethoxy)methyl)-1H-pyrazole (CAS 2550661-40-8)
- 3-Bromo-5-iodo-6-methylpyridin-2-amine (CAS 875001-36-8)
- [1,1′-Binaphthalene]-2-carboxylic acid,2′-[(diethylamino)carbonyl]-,(S)- (CAS 130104-15-3)
- Semaglutide Impurity 3 (CAS CATO-C4X-22263)
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