Phenoxymethylpenicillin Impurity 19 CAS CATO-C4X-212619
| CAS No. | CATO-C4X-212619 |
| Molecular Formula | C21H33N3O3S |
| Molecular Weight | 407.57 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Structurally, Phenoxymethylpenicillin Impurity 19 (C21H33N3O3S) contains a steroid core, an amide group, a sulfone group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 7.0, corresponding to approximately 7 ring(s) or double-bond equivalent(s). With a molecular weight of 407.57 g/mol, it falls into the moderately-high-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).
Phenoxymethylpenicillin Impurity 19 (CAS CATO-C4X-212619) is a certified pharmaceutical impurity reference standard with the molecular formula C21H33N3O3S and a molecular weight of 407.57 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.
As a certified reference material (CRM), Phenoxymethylpenicillin Impurity 19 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 | C21H33N3O3S |
| Molecular Weight | 407.57 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°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 | 3 |
| Sulfur Atoms | 1 |
Related Phenoxymethylpenicillin Standards
- Phenoxymethylpenicillin Impurity 12 (CAS CATO-C4X-212612)
- Phenoxymethylpenicillin Impurity 16 (CAS CATO-C4X-212616)
- Phenoxymethylpenicillin Impurity 22 (CAS CATO-C4X-212622)
- Phenoxymethylpenicillin Impurity 20 (CAS CATO-C4X-212620)
- Phenoxymethylpenicillin EP Impurity E (CAS 1049-84-9)
- Phenoxymethylpenicillin EP Impurity D (CAS 20880-67-5)
- Phenoxymethylpenicillin Impurity 18 (CAS CATO-C4X-212618)
- Phenoxymethylpenicillin Impurity 23 (CAS CATO-C4X-212623)
Recommended Standards
- α-(Dicyclohexylphosphino)-N-methyl-N-(phenylmethyl)benzenemethanamine (CAS 219711-45-2)
- Lovastatin-d3 (CAS 1002345-93-8)
- tert-Butyl (S)-5-(((S)-tert-butylsulfinyl)amino)-5,7-dihydrospiro[cyclopenta[b]pyridine-6,4'-piperidine]-1'-carboxylate (CAS 2424047-22-1)
- (2-(Dimethyl(9-phenyl-9H-carbazol-3-yl)silyl)phenyl)methanol (CAS 1244855-67-1)
- Piroxicam EP Impurity B (CAS 65897-46-3)
- Alectinib Impurity 88 (CAS CATO-C4X-283688)
- Perospirone Impurity 17 (CAS 40991-37-5)
- 1-(3-Methyl-3-azetidinyl)-pyrrolidine (CAS 24083-67-8)
- Tert-butyl (S)-3-(1-amino-2-methoxy-2-oxoethyl)azetidine-1-carboxylate (CAS 1932092-98-2)
- 1-(7-Chlorobenzofuran-2-yl)-2,2-dimethylpropan-1-one (CAS 1497045-77-8)
- Ethyl 4-chloro-2-quinazolinecarboxylate (CAS 34632-69-4)
- 3-Fluorobenzylmagnesium chloride, 0.50 M in 2-MeTHF (CAS 64168-34-9)
- Ethyl butyrimidate (CAS 998-97-0)
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