Maprotiline EP impurity E CAS 23941-38-0
| CAS No. | 23941-38-0 |
| Molecular Formula | C21H25N |
| Molecular Weight | 291.43 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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.
Maprotiline EP impurity E (CAS 23941-38-0) is a certified pharmaceutical impurity reference standard with the molecular formula C21H25N and a molecular weight of 291.43 g/mol.
Structurally, Maprotiline EP impurity E (C21H25N) contains a nitrogen-containing heterocyclic scaffold, a nitrile group. The molecule exhibits a degree of unsaturation (DBE) of 10.0, corresponding to approximately 10 ring(s) or double-bond equivalent(s). With a molecular weight of 291.43 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 certified reference material (CRM), Maprotiline EP impurity E 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 | C21H25N |
| Molecular Weight | 291.43 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1963 |
| Nitrogen Atoms | 1 |
Related Maprotiline Standards
- Maprotiline (CAS 10262-69-8)
- Maprotiline-D8 N-nitroso (CAS CATO-C4X-28306)
- Maprotiline EP impurity C (CAS 5721-37-9)
- (E)-Maprotiline EP Impurity A (CAS 38849-09-1)
- Maprotiline Hydrochloride EP Impurity B (CAS 1648814-39-4)
- Maprotiline mesylate (CAS 58902-67-3)
- Maprotiline EP impurity E HCl (CAS 23941-45-9)
- Maprotiline EP impurity C HCl (CAS 92202-51-2)
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- 6-Ethyl-3-(morpholin-4-ylcarbonyl)-4,5,6,7-tetrahydro-1-benzothien-2-ylamine (CAS 590351-57-8)
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- 4-Methylpentane-2-thiol (CAS 1639-05-0)
- 1-(2-Aminoethyl)tetrahydropyrimidin-2(1h)-one (CAS 334971-95-8)
- Cyclohexyl(2,5-difluorophenyl)methanol (CAS 1216279-49-0)
- 1-(2-(Chloromethoxy)ethyl)-4-fluorobenzene (CAS 182949-79-7)
- Peptide 432 (CAS CATO-CPTD788432)
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