Levamisole 4-Nitro Impurity CAS 76497-81-9
| CAS No. | 76497-81-9 |
| Molecular Formula | C11H11N3O2S |
| Molecular Weight | 249.29 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Levamisole 4-Nitro Impurity.
Levamisole 4-Nitro Impurity (CAS 76497-81-9), molecular formula C11H11N3O2S and molecular weight 249.29 g/mol, is a CATO reference standard with documented purity and traceability.
Levamisole 4-Nitro Impurity (C11H11N3O2S) contains a nitrogen-containing heterocyclic scaffold, 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. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures Levamisole 4-Nitro Impurity 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 | C11H11N3O2S |
| Molecular Weight | 249.29 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1978 |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Levamisole Standards
- Levamisole EP Impurity A (CAS 32190-34-4)
- Levamisole 4-Hydroxy Impurity (CAS 69359-04-2)
- Levamisole Impurity B (CAS 20406-02-4)
- Levamisole EP Impurity B (CAS 37430-07-2)
- Levamisole (CAS 14769-73-4)
- Levamisole EP Impurity D (CAS 4335-28-8)
- Levamisole EP Impurity E (CAS 32190-36-6)
- Levamisole Phosphate (CAS 32093-35-9)
Recommended Standards
- Ethyl 5-[(pyridin-3-yl)amino]-1,3-thiazole-4-carboxylate (CAS 899896-00-5)
- Methyl 2-((5-phenyl-4H-1,2,4-triazol-3-yl)thio)acetate (CAS 457943-71-4)
- Ethyl 4-hydroxy-5-phenylthiazole-2-carboxylate (CAS 67431-24-7)
- Methyl 3-(2-aminophenoxy)thiophene-2-carboxylate (CAS 91041-21-3)
- 1-(5-Bromobenzofuran-2-yl)ethane-1-thiol (CAS 1038981-94-0)
- 1-(1-(2-Methoxyethyl)cyclopentyl)-N-methylmethanamine (CAS 1341446-17-0)
- (4-Ethylphenyl)(6-methylpyridin-3-yl)methanone (CAS 1187168-13-3)
- 1-(5-Chloro-1-propyl-1H-benzo[d]imidazol-2-yl)ethanol (CAS 1243500-73-3)
- Ethyl 7-(4-chlorobenzoyl)pyrrolo[1,2-b]pyridazine-5-carboxylate (CAS 302913-52-6)
- 4-Aminobenzoic Acid Ethyl Ester (CAS 94-09-7)
- (5Z)-3-(2-Chlorophenyl)-5-{[5-nitro-2-(phenylsulfanyl)phenyl]methylidene}-2-sulfanylidene-1,3-thiazolidin-4-one (CAS 329078-98-0)
- Piroxicam Impurity 20 (CAS CATO-C4X-173320)
- 2-(3-Fluoro-5-(difluoromethyl)benzoyl)pyridine (CAS 1261535-37-8)
- Des-Leu26-Tirzepatide (CAS CATO-CPTD788947)
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