Furosemide Impurity 33 CAS 1803102-41-1
| CAS No. | 1803102-41-1 |
| Molecular Formula | C10H9NO2 |
| Molecular Weight | 175.18 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Owing to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage, Furosemide Impurity 33 is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 175.18 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
CATO supplies Furosemide Impurity 33 (CAS 1803102-41-1), a pharmacopoeial impurity reference standard (molecular formula C10H9NO2, MW 175.18 g/mol) used for the identification and quantification of trace impurities in APIs.
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.
CATO manufactures Furosemide Impurity 33 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.
Physical & Chemical Properties
| Molecular Formula | C10H9NO2 |
| Molecular Weight | 175.18 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | >90% |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1995 |
| Nitrogen Atoms | 1 |
Related Furosemide Standards
- Furosemide Impurity 49 (CAS CATO-C4X-140249)
- Furosemide Impurity 57 (CAS 19377-82-3)
- Furosemide Impurity 32 (CAS 18240-50-1)
- Furosemide Impurity 57 (CAS 5428-37-5)
- Furosemide EP Impurity E (CAS 50-84-0)
- Furosemide Impurity 41 (CAS 137-65-5)
- Furosemide Impurity 34 (CAS 6660-65-7)
- Furosemide Impurity 21 (CAS 30170-04-8)
Recommended Standards
- Famotidine impurity 75 (CAS 90924-16-6)
- Isavuconazole Impurity 72 (CAS 192225-36-8)
- Eltrombopag impurity 142 (CAS CATO-C4X-1198142)
- Metronidazole-d4 (CAS 1261392-47-5)
- Cefuroxime Sodium EP Impurity B (CAS 39685-31-9)
- Tebipenem Pivoxil Impurity 12 (CAS CATO-C4X-134712)
- Ropivacaine Impurity 22 (CAS CATO-C4X-175322)
- 4-(2-(4,5-Diphenyloxazol-2-yl)ethyl)morpholine hydrochloride (CAS 33161-96-5)
- Eosin diacetate (CAS 7284-92-6)
- Risperidone EP Impurity M HCl (CAS 84163-13-3)
- 4,4,5,5-Tetramethyl-2-(3-phenoxyprop-1-yn-1-yl)-1,3,2-dioxaborolane (CAS 2715049-69-5)
- 1-(5-Methylpyrimidin-2-yl)ethan-1-amine (CAS 944906-27-8)
- 7-(tert-Butoxycarbonyl)-7-azabicyclo[2.2.1]heptane-1-carboxylic acid (CAS 441353-52-2)
- Semaglutide impurity 73 (CAS CATO-C4X-222673)
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