Sulfasalazine Impurity 19 CAS 2033064-46-7
| CAS No. | 2033064-46-7 |
| Molecular Formula | C22H19N5O4S2 |
| Molecular Weight | 481.55 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures Sulfasalazine Impurity 19 under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
CATO supplies Sulfasalazine Impurity 19 (CAS 2033064-46-7), a pharmacopoeial impurity reference standard (molecular formula C22H19N5O4S2, MW 481.55 g/mol) used for the identification and quantification of trace impurities in APIs.
Sulfasalazine Impurity 19 (C22H19N5O4S2) contains a flavonoid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C22H19N5O4S2 |
| Molecular Weight | 481.55 g/mol |
| Purity | ≥95% |
| 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 |
| CAS Registry Year (est.) | 1996 |
| Nitrogen Atoms | 5 |
| Sulfur Atoms | 2 |
Related Sulfasalazine Standards
- Sulfasalazine Impurity 17 (CAS CATO-C4X-141917)
- Sulfasalazine impurity 14 (CAS 42753-55-9)
- Sulfasalazine impurity 15 (CAS CATO-C4X-141915)
- Sulfasalazine Impurity 21 (CAS 2033064-44-5)
- Sulfasalazine-D4 (CAS 1346606-50-5)
- Sulfasalazine EP Impurity F (CAS 66364-71-4)
- Sulfasalazine (CAS 599-79-1)
- Sulfasalazine EP Impurity D (CAS 66364-70-3)
Recommended Standards
- Preangiotensinogen (11-14) (human) (H-4665.0005) (CAS 102813-98-9)
- Gentamycin sulfate EP impurity D (CAS CATO-C4X-148021)
- Ozenoxacin Impurity 49 (CAS CATO-C4X-279649)
- tert-Butyl2-phenyl-4-(tosyloxy)-7,8-dihydropyrido[4,3-d]pyrimidine-6(5H)-carboxylate (CAS 1033194-61-4)
- Cefoperazone Impurity 22 (CAS 62893-24-7)
- Ascorbic Acid Impurity 43 (CAS 20229-76-9)
- Rosuvastatin Impurity 157 (CAS CATO-C4X-1169157)
- 3-(4-Fluorophenyl)-1-(p-tolyl)-1H-pyrazole-5-carboxylic acid (CAS 618102-73-1)
- 2-(3-Chlorophenyl)-3-methylbutan-2-ol (CAS 28114-97-8)
- 1,2-Distearoyl-sn-glycero-3-phosphoethanolamine (CAS 1069-79-0)
- 2-Propenoic acid, 2-aminoethyl ester, nitrate , polymer with 2-propenamide (CAS 67990-39-0)
- n-[3-(aminomethyl)phenyl]-2-(1h-pyrazol-1-yl)propanamide dihydrochloride (CAS 1423031-63-3)
- Levofloxacin Impurity 17 (CAS CATO-C4X-137117)
- Fibrinopeptide B (human) (CAS 36204-23-6)
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