Emtricitabine Int.Ph Impurity A CAS CATO-C4X-123238
| CAS No. | CATO-C4X-123238 |
| Molecular Formula | 2*C8H8FN3O4S |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Structurally, Emtricitabine Int.Ph Impurity A (C8H8FN3O4S) contains a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, fluorine substitution. The molecule exhibits a degree of unsaturation (DBE) of 6.0, corresponding to approximately 6 ring(s) or double-bond equivalent(s). With a molecular weight of 261.23 g/mol, it falls into the medium-molecular-weight range. 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).
As a process- or degradation-related impurity, Emtricitabine Int.Ph Impurity A (CAS CATO-C4X-123238, C8H8FN3O4S) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
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), Emtricitabine Int.Ph Impurity A 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 | 2*C8H8FN3O4S |
| Molecular Weight | 261.23 g/mol |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| 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) | 6.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Halogen Content | F-containing |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Emtricitabine Standards
- Emtricitabine impurity 61 (CAS 1055312-45-2)
- Emtricitabine Impurity 24 (CAS 1160303-44-5)
- Emtricitabine-13C,15N2 (CAS 1217820-69-3)
- Emtricitabine Impurity 1 (CAS 1238210-10-0)
- Emtricitabine Impurity 35 (CAS 1238210-14-4)
- Emtricitabine Impurity 7 Potassium salt (CAS 124356-72-5)
- Emtricitabine Impurity N2 (CAS 1246819-86-2)
- Emtricitabine Impurity 12 Sodium salt (CAS 127087-58-5)
Recommended Standards
- Brivaracetam Impurity 7 (CAS 63095-51-2)
- Baloxavir Marboxil Impurity 244 (CAS 2473028-59-8)
- Etravirine impurity 11 (CAS CATO-C4X-135611)
- 6-Benzyl-4,5,6,7-tetrahydro-1H-pyrazolo[3,4-c]pyridin-3(2H)-one 909187-64-0 C13H15N3O W9349 (CAS 909187-64-0)
- 7,8-dichloro-3,4-dihydro-2H-1-benzopyran-4-amine hydrochloride (CAS 1803607-13-7)
- Ethyl 3-chloro-5-cyanopicolinate (CAS 1221791-91-8)
- 3,4-Dihydro-2H-benzo[b][1,4]dioxepine-7-carboxylic acid (CAS 20825-89-2)
- 5-(4-(Hydroxymethyl)piperidin-1-yl)thiophene-2-carbaldehyde (CAS 1342213-43-7)
- 4-[[(2,2,2-Trichloroethoxy)sulfonyl]oxy]-benzoic Acid Phenylmethyl Ester (CAS 653605-32-4)
- 59880-97-6 Chemotactic peptide F-Met-Leu-Phe L-Phenylalanine, N-(N-(N-formyl-L-methionyl)-L-leucyl)- N-Formyl-L-methionyl-L-leucyl-L-phenylalanine N-Formyl-Met-Leu-Phe N-Formylmethionine leucyl-phenylalanine fMLF fMLP (misnomer but widely used) (CAS 59880-97-6)
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