Sulfadimethoxine EP Impurity B CAS 555-25-9
Purity 97%+In StockPharmacopoeial Impurity Standards
| CAS No. | 555-25-9 |
| Molecular Formula | C14H16N4O5S |
| Molecular Weight | 352.37 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Sulfadimethoxine EP Impurity B (CAS 555-25-9), a pharmacopoeial impurity standards reference standard manufactured under ISO 17034 accreditation. Molecular formula: C14H16N4O5S. Molecular weight: 352.37 g/mol. Batch-specific COA and technical support are available on request.
Physical & Chemical Properties
| Molecular Formula | C14H16N4O5S |
| Molecular Weight | 352.37 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 1 |
Related Sulfadimethoxine Standards
- Sulfadimethoxine Impurity 21 (CAS CATO-C4X-150421)
- Sulfadimethoxine Related Compound 1 (CAS 74220-53-4)
- Sulfadimethoxine-D6 (CAS 73068-02-7)
- Sulfadimethoxine-D4 (CAS 1020719-80-5)
- Sulfadimethoxine (CAS 122-11-2)
- Sulfadimethoxine Impurity 13 (CAS CATO-C4X-150413)
- Sulfadimethoxine EP Impurity F (CAS 19868-00-9)
- Sulfadimethoxine Impurity (CAS 13145-56-7)
Recommended Standards
- Nifedipine-d6 (CAS 1188266-14-9)
- Fluocinolone Acetonide Impurity 34 (CAS CATO-C4X-238134)
- Thiophen-2-yl(7-(trifluoromethyl)-2,3,3a,4-tetrahydropyrrolo[1,2-a]quinoxalin-5(1H)-yl)methanone (CAS 861206-85-1)
- Alanyl Glutamine Impurity 19 (CAS 888939-48-8)
- Dolutegravir Impurity 11 (CAS 1973402-05-9)
- 2-((Dimethylamino)methylene)-N1,N3-bis(3-(trifluoromethyl)phenyl)malonamide (CAS 245039-15-0)
- 6-Chloro-2-isobutylpyrimidin-4(3H)-one (CAS 1706449-48-0)
- Trimethoprim EP Impurity C (CAS 29606-06-2)
- N-(4-chlorophenyl)-2-(4-oxo-4H-benzo[e][1,3]thiazin-2-yl)acetamide (CAS 338975-31-8)
- Semaglutide Impurity 2 (CAS CATO-C4X-22262)
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 13829788188 / jacky.chen@cato-chem.com