Methazolamide Impurity 5 CAS CATO-C4X-34045
| CAS No. | CATO-C4X-34045 |
| Molecular Formula | C12H14N4O3S2 |
| Molecular Weight | 326.39 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.
CATO supplies Methazolamide Impurity 5 (CAS CATO-C4X-34045), a pharmacopoeial impurity reference standard (molecular formula C12H14N4O3S2, MW 326.39 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Methazolamide Impurity 5 (C12H14N4O3S2) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 8.0, corresponding to approximately 8 ring(s) or double-bond equivalent(s). With a molecular weight of 326.39 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).
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
Physical & Chemical Properties
| Molecular Formula | C12H14N4O3S2 |
| Molecular Weight | 326.39 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 2 |
Related Methazolamide Standards
- Methazolamide Impurity 4 (CAS CATO-C4X-34044)
- Methazolamide Impurity 2 (CAS 1312679-00-7)
- Methazolamide Impurity 1 (CAS CATO-C4X-34041)
- Methazolamide (CAS 554-57-4)
- Methazolamide Impurity 3 (CAS CATO-C4X-34043)
- Methazolamide Impurity 4 (CAS 38583-51-6)
- Methazolamide Impurity 2 (CAS CATO-C4X-34042)
- Methazolamide Impurity 6 (CAS CATO-C4X-34046)
Recommended Standards
- Peficitinib (CAS 944118-01-8)
- Gliotoxin (CAS 67-99-2)
- Topicamide lmpurity 8 (CAS 87239-08-5)
- Dibenzyl Adipate (CAS 2451-84-5)
- Fulvestrant Impurity 18 (CAS CATO-C4X-191718)
- Phenylephrine Impurity 69 (CAS CATO-C4X-146769)
- Apalutamide Impurity 61 (CAS 1513077-71-8)
- Isochroman-8-ol (CAS 1391113-34-0)
- 1-Benzyl-2-oxopiperazine Hydrochloride (CAS 78551-58-3)
- Methyl 3-(6-aminopyridin-3-yl)benzoate (CAS 889950-25-8)
- 4-(Aminomethyl)-N-isopropylpiperidine-1-carboxamide (CAS 1249126-96-2)
- 3-(3,4-Difluorophenyl)butan-2-ol (CAS 1528714-87-5)
- 1-hydroxybenz(a)anthracene (CAS 69847-26-3)
- Liraglutide(5-31)TFA Salt (CAS CATO-C4X-19924)
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