Polymyxin Impurity 29 CAS CATO-C4X-225529
| CAS No. | CATO-C4X-225529 |
| Molecular Formula | C55H96N16O13 |
| Molecular Weight | 1189.45 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Polymyxin Impurity 29 is closely related to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies Polymyxin Impurity 29 (CAS CATO-C4X-225529), a pharmacopoeial impurity reference standard (molecular formula C55H96N16O13, MW 1189.45 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Polymyxin Impurity 29 (C55H96N16O13) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 16.0, corresponding to approximately 16 ring(s) or double-bond equivalent(s). With a molecular weight of 1189.45 g/mol, it falls into the 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).
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), Polymyxin Impurity 29 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 | C55H96N16O13 |
| Molecular Weight | 1189.45 g/mol |
| Purity | >95% |
| 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) | 16.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 16 |
Related Polymyxin Standards
- Polymyxin B3 (CAS 71140-58-4)
- Polymyxin B2 (CAS 34503-87-2)
- Polymyxin Impurity 25 (CAS CATO-C4X-225525)
- Polymyxin Impurity 27 (CAS CATO-C4X-225527)
- Polymyxin Impurity 28 (CAS CATO-C4X-225528)
- Polymyxin Impurity 30 (CAS CATO-C4X-225530)
- Polymyxin B - API Standards (CAS 1404-26-8)
- Polymyxin Impurity 38 (CAS CATO-C4X-225538)
Recommended Standards
- Micafungin Impurity 5 (CAS 539823-80-8)
- Bis[2-(perfluorodecyl)ethyl] Phosphate (CAS 1895-26-7)
- (1S,1''S)-2',2'''-[1,2- Ethanediylbis(oxy-2,1-ethanediyloxy)]bis[3,3'-diiodo[1,1'-binaphthalen]-2-ol] (CAS 1260243-73-9)
- (1R,1''R)-2',2'''-[1,2-Ethanediylbis(oxy-2,1-ethanediyloxy)]bis[3,3'-diiodo[1,1'-binaphthalen]-2-ol] (CAS 1411975-49-9)
- Elagolix Impurity 14 (CAS 2375499-59-3)
- Cholesterol Impurity 30 (CAS 17608-47-8)
- Dequalinium EP Impurity B (2Formate) (CAS 747387-02-6 (free base))
- N-(Quinolin-8-yl)benzamide (CAS 33757-48-1)
- alpha-(3-Biphenylyl)benzylamine (CAS 1138152-53-0)
- (2,2-Dimethyl-2,3-dihydro-1H-inden-5-yl)methanol (CAS 1400701-40-7)
- 2-Piperazin-1-yl-3h-thieno[3,2-d]pyrimidin-4-one (CAS 1248559-72-9)
- Tert-butyl (3aR,7aR)-octahydro-1H-pyrrolo[3,2-b]pyridine-1-carboxylate acetate (CAS 1373923-06-8)
- 4,5-Epoxy-19-nortestosterone (CAS 52153-24-9)
- Polymyxin B nonapeptide TFA (CAS 2220175-42-6)
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