Benserazide Impurity 18 CAS 2144-08-3
| CAS No. | 2144-08-3 |
| Molecular Formula | C7H6O4 |
| Molecular Weight | 154.12 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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 process- or degradation-related impurity, Benserazide Impurity 18 (CAS 2144-08-3, C7H6O4) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Based on its molecular formula C7H6O4, Benserazide Impurity 18 contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 154.12 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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).
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.
Physical & Chemical Properties
| Molecular Formula | C7H6O4 |
| Molecular Weight | 154.12 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | >95% |
| Storage | Store at 2-8°C, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO, water |
| Stability | May oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
Related Benserazide Standards
- Benserazide Impurity 19 (CAS 487-70-7)
- Benserazide Impurity 20 (CAS 35094-87-2)
- Benserazide Impurity 22 (CAS 13677-79-7)
- Benserazide Impurity 31 (CAS 437988-46-0)
- Benserazide Impurity 53 (CAS 773868-38-5)
- Benserazide Impurity 32 (CAS 3955-29-1)
- Benserazide Impurity 59 (CAS CATO-C4X-142759)
- Benserazide Impurity 21 (CAS 5625-41-2)
Recommended Standards
- Mesalazine EP Impurity G (CAS 490-79-9)
- Terbutaline EP Impurity A (CAS 99-10-5)
- 2,3-Dihydroxybenzoic Acid (CAS 303-38-8)
- Imidazole Pyruvic acid (CAS 2504-83-8)
- Clevidipine Butyrate impurity 18 (CAS 105383-68-4)
- Regorafenib Impurity 45 (CAS CATO-C4X-104745)
- Lifitegrast Impurity 131 (CAS CATO-C4X-2409131)
- 2-(3-(Pyrazin-2-yl)-1H-1,2,4-triazol-5-yl)acetic acid (CAS 1087648-44-9)
- Darunavir (1R,2R)-Isomer (CAS 1546918-95-9)
- 2,4-Dibromo-6-methoxypyridine (CAS 117873-73-1)
- SD 2590 Hydrochloride (CAS 226395-93-3)
- Dimethyl(4-(trifluoromethyl)phenyl)phosphine oxide (CAS 1333230-26-4)
- 2-((Furan-2-ylmethyl)amino)-4-oxo-4H-pyrido[1,2-a]pyrimidine-3-carbaldehyde (CAS 609793-18-2)
- Liraglutide Impurity 5 TFA Salt (CAS CATO-C4X-19925)
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