Famotidine Impurity 39 CAS CATO-C4X-139239
| CAS No. | CATO-C4X-139239 |
| Molecular Formula | C5H7ClN4S |
| Molecular Weight | 190.65 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Famotidine Impurity 39 is closely related to a nitrile group, sulfur-containing functionality, chlorine substitution in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies Famotidine Impurity 39 (CAS CATO-C4X-139239), a pharmacopoeial impurity reference standard (molecular formula C5H7ClN4S, MW 190.65 g/mol) used for the identification and quantification of trace impurities in APIs.
Famotidine Impurity 39 (C5H7ClN4S) contains a nitrile group, sulfur-containing functionality, chlorine substitution. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
As a certified reference material (CRM), Famotidine Impurity 39 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C5H7ClN4S |
| Molecular Weight | 190.65 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Halogen Content | Cl-containing |
| Nitrogen Atoms | 4 |
| Sulfur Atoms | 1 |
Related Famotidine Standards
- Famotidine Impurity 02 (CAS 81152-53-6)
- Famotidine Impurity 27 (CAS 1378820-83-7)
- Famotidine Impurity 82 (CAS CATO-C4X-139282)
- Famotidine Impurity 50 (CAS 95853-51-3)
- Famotidine Impurity 78 (CAS 88068-99-9)
- Famotidine Impurity 79 (CAS CATO-C4X-139279)
- Famotidine Impurity 45 (CAS 1644079-90-2)
- Famotidine Impurity 54 (CAS CATO-C4X-139254)
Recommended Standards
- p-Toluenesulfonyl Chloride (CAS 98-59-9)
- 6-chloro-3-methylimidazo[1,2-b]pyridazin-2-amine (CAS 1005785-59-0)
- N-(Chloroacetyl)2-amino-4-methylthiazol (CAS 50772-53-7)
- (4-Chloro-1H-pyrrolo[2,3-b]pyridin-5-yl)methanol (CAS 1015610-07-7)
- Mosapride Impurity 40 (CAS CATO-C4X-104440)
- Trazodone Impurity 101 TriHCl (CAS CATO-C4X-1772101)
- Olaparib Impurity 90 (CAS CATO-C4X-113590)
- 2-(4-Methoxy-2-methylphenyl)-3-methylbutan-2-ol (CAS 1443340-07-5)
- Boc-NH-PEG7-acid (CAS 2055044-68-1)
- 2-(4-Hydroxyphenyl)benzo[d]oxazol-6-ol (CAS 139407-74-2)
- 2-Amino-4-methoxy-2-methylbutanoic acid (CAS 91724-73-1)
- N-(4-(N-(1-(Ethylsulfonyl)-1,2,3,4-tetrahydroquinolin-6-yl)sulfamoyl)phenyl)propionamide (CAS 946242-08-6)
- 2-Phenylbenzo[d]oxazole-7-carboxylic acid (CAS 131862-24-3)
- Mast Cell Degranulating (MCD) Peptide (CAS 32908-73-9)
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