Benzylpenicillin Impurity 48 CAS CATO-C4X-189948
| CAS No. | CATO-C4X-189948 |
| Molecular Formula | C15H20N2O3S |
| Molecular Weight | 308.40 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, Benzylpenicillin Impurity 48 is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 308.40 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
Benzylpenicillin Impurity 48 (CAS CATO-C4X-189948) is a certified pharmaceutical impurity reference standard with the molecular formula C15H20N2O3S and a molecular weight of 308.40 g/mol.
Recommended for quantitative analysis by HPLC, GC, LC-MS/MS, or GC-MS as an external calibration standard; it can also be used for spiked-recovery experiments, LOD/LOQ determination, and LC-MS/MS multiple-reaction-monitoring (MRM) calibration.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C15H20N2O3S |
| Molecular Weight | 308.40 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Benzylpenicillin Standards
- Benzylpenicillin EP Impurity F (2R,4S-Isomer) (CAS 73184-06-2)
- Benzylpenicillin EP Impurity F (CAS CATO-C4X-18996)
- Benzylpenicillin Impurity 11 (CAS 118-53-6)
- Benzylpenicillin EP Impurity G (CAS CATO-C4X-189935)
- Benzylpenicillin Potassium EP Impurity H (CAS 4493-18-9)
- Benzylpenicillin (Benzathine) tetrahydrate Impurity 24 (CAS 69239-61-8)
- Benzylpenicillin EP Impurity D (CAS 13093-87-3)
- Benzylpenicillin Impurity 54 (CAS 90962-63-3)
Recommended Standards
- Ertapenem Impurity 61 (CAS CATO-C4X-163361)
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- Pranoprofen Impurity 32 (CAS CATO-C4X-181132)
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- N-Propyl-2,3-dihydro-1H-inden-1-amine (CAS 1016719-48-4)
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