Olsalazine EP Impurity I CAS CATO-C4X-18019
| CAS No. | CATO-C4X-18019 |
| Molecular Formula | C20H14N4O7 |
| Molecular Weight | 422.35 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
As a process- or degradation-related impurity, Olsalazine EP Impurity I (CAS CATO-C4X-18019, C20H14N4O7) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Based on its molecular formula C20H14N4O7, Olsalazine EP Impurity I contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 422.35 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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.
Physical & Chemical Properties
| Molecular Formula | C20H14N4O7 |
| Molecular Weight | 422.35 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 16.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 4 |
Related Olsalazine Standards
- Olsalazine EP Impurity F (CAS CATO-C4X-18016)
- Olsalazine EP Impurity G (CAS CATO-C4X-18017)
- Olsalazine EP Impurity E (CAS CATO-C4X-18015)
- Olsalazine EP Impurity H (CAS CATO-C4X-18018)
- Olsalazine EP Impurity D (CAS 93964-55-7)
- Olsalazine EP Impurity A (CAS CATO-C4X-18011)
- Olsalazine-13C6 (CAS CATO-C4X-180110)
- Olsalazine-d3,15N sodium (CAS 15722-48-2)
Recommended Standards
- tert-Butyl 4-(5-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)thiophene-3-carbonyl)piperazine-1-carboxylate (CAS 2377607-11-7)
- Lactose 6’-Sulfate (CAS 1015758-24-3)
- 6-Acetyl-3-methylcyclohex-2-enone (CAS 51742-11-1)
- Lactose-3’-sulfate (CAS 159358-51-7)
- Pemafibrate Impurity 39 (CAS CATO-C4X-290339)
- Omadacycline Impurity 33 (CAS CATO-C4X-285733)
- Atorvastatin impurity 160 (CAS 1112262-76-6)
- 4-tert-Butylvinylbenzoate (CAS 15484-80-7)
- (1r,2r,4r)-1,7,7-Trimethylbicyclo[2.2.1]heptan-2-amine hydrochloride (CAS 24629-78-5)
- (3,5-Dichlorophenyl)hydrazine (CAS 39943-56-1)
- 1-(6-Fluoro-2-pyridinyl)-4-(1H-1,2,4-triazol-1-yl)-1H-pyrazol-5-ol (CAS 1007237-14-0)
- 3-(Pyrimidin-2-ylcarbamoyl)-7-oxabicyclo[2.2.1]hept-5-ene-2-carboxylic acid (CAS 6331-30-2)
- Ethyl 2-(2-(methylthio)-6-oxo-1,6-dihydropyrimidin-5-yl)acetate (CAS 29571-44-6)
- Peptide Impurity 34 (CAS 21282-09-7)
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