Furosemide EP Impurity A CAS 4818-59-1
Purity >95%In StockPharmacopoeial Impurity Standards
| CAS No. | 4818-59-1 |
| Molecular Formula | C12H11ClN2O5S |
| Molecular Weight | 330.74 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Furosemide EP Impurity A (CAS 4818-59-1), a pharmacopoeial impurity standards reference standard manufactured under ISO 17034 accreditation. Molecular formula: C12H11ClN2O5S. Molecular weight: 330.74 g/mol. Batch-specific COA and technical support are available on request.
Physical & Chemical Properties
| Molecular Formula | C12H11ClN2O5S |
| Molecular Weight | 330.74 g/mol |
| Purity | >95% |
| 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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1958 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Furosemide Standards
- Furosemide (CAS 54-31-9)
- Furosemide Impurity 55 (CAS CATO-C4X-140255)
- Furosemide Impurity N3 (CAS 22893-13-6)
- Furosemide Amide Impurity (CAS 4793-47-9)
- Furosemide Impurity 25 (CAS 2309462-39-1)
- Furosemide Impurity 47 (CAS CATO-C4X-140247)
- Furosemide Impurity 9 (CAS CATO-C4X-14029)
- Furosemide Impurity 48 Sodium Salt (CAS 133989-65-8（free base）)
Recommended Standards
- Olaparib Impurity 96 (CAS CATO-C4X-113596)
- pirazolac (CAS 71002-09-0)
- 2-(5-(Chloromethyl)-1,2,4-oxadiazol-3-yl)-N-(4-sulfamoylphenyl)acetamide (CAS 885461-52-9)
- Finasteride Impurity 51 (CAS CATO-C4X-164551)
- Isoniazid Impurity 4 (CAS 1452-63-7)
- Ethyl 3-(3-aminobenzamido)benzoate (CAS 1307391-08-7)
- 1,1'-(Sulfonylbis(4,1-phenylene))diurea (CAS 64859-61-6)
- Quinoline-3-carbonyl chloride hydrochloride (CAS 111545-64-3)
- Methyl 1-(2-methoxyethyl)-7-methyl-4-oxo-2-thioxo-1,2,3,4-tetrahydropyrido[2,3-d]pyrimidine-5-carboxylate (CAS 938009-99-5)
- Semaglutide Impurity 133 (CAS CATO-C4X-2226133)
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