Niclosamide CAS 50-65-7
Purity >95%In StockPharmaceutical Standards
| CAS No. | 50-65-7 |
| Molecular Formula | C13H8Cl2N2O4 |
| Molecular Weight | 327.12 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Niclosamide (CAS 50-65-7) is a high-purity pharmaceutical standards reference standard from CATO, an ISO 17034 accredited reference material producer. Molecular formula: C13H8Cl2N2O4. Molecular weight: 327.12 g/mol. Each batch is supplied with a Certificate of Analysis (COA).
Physical & Chemical Properties
| Molecular Formula | C13H8Cl2N2O4 |
| Molecular Weight | 327.12 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor, low volatility) |
| 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 2 |
Related Niclosamide Standards
- Niclosamide Impurity 2 (CAS 16739-20-1)
- 13C6-Niclosamide hydrate (CAS 1325559-12-3)
- Niclosamide-13C6 (CAS 1325808-64-7)
- Niclosamide Impurity 4 (CAS 16739-21-2)
- Niclosamide Impurity 3 (CAS 4638-49-7)
- Niclosamide Impurity 5 (CAS 32853-24-0)
- Niclosamide Monohydrate (CAS 73360-56-2)
- Niclosamide Piperazine Salt (CAS 34892-17-6)
Recommended Standards
- 3-[5-(2-bromo-5-methoxyphenyl)-1,3,4-oxadiazol-2-yl]propanoic acid (CAS 1179591-56-0)
- Dotinurad Impurity 26 (CAS CATO-C4X-249426)
- 4-(4-Bromo-3-formylphenoxy)phthalonitrile (CAS 1239518-48-9)
- (3,5-diaminophenyl)phosphonic acid dihydrochloride (CAS CATO-C3D-262400)
- 3-Amino-4-iodo-2-(trifluoromethyl)pyridine (CAS 1227509-56-9)
- Benzyl tert-butyl ethane-1,2-diyldicarbamate (CAS 77153-05-0)
- 4-Benzyl-1-(3-methylbenzoyl)piperidine (CAS 260428-67-9)
- Fmoc-Asp(OtBu)-(Dmb)Gly-OH (CAS 900152-72-9)
- 7-Chlorochromane-3-carboxylic acid (CAS 1518839-13-8)
- Tirzepatide Impurity 19 X TFA Salt (CAS CATO-C4X-324019)
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