Maprotiline EP impurity C CAS 5721-37-9
| CAS No. | 5721-37-9 |
| Molecular Formula | C19H21N |
| Molecular Weight | 263.38 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.
CATO supplies Maprotiline EP impurity C (CAS 5721-37-9), a pharmacopoeial impurity reference standard (molecular formula C19H21N, MW 263.38 g/mol) used for the identification and quantification of trace impurities in APIs.
Owing to a nitrogen-containing heterocyclic scaffold, a nitrile group, Maprotiline EP impurity C is typically pale yellow to yellow low-melting solid. Its solid-state physicochemical attributes — including a molecular weight of 263.38 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).
CATO manufactures Maprotiline EP impurity C under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C19H21N |
| Molecular Weight | 263.38 g/mol |
| 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.) | 1958 |
| Nitrogen Atoms | 1 |
Related Maprotiline Standards
- (E)-Maprotiline EP Impurity A (CAS 38849-09-1)
- Maprotiline (CAS 10262-69-8)
- Maprotiline EP impurity E (CAS 23941-38-0)
- Maprotiline-D8 N-nitroso (CAS CATO-C4X-28306)
- 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)
Recommended Standards
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- Ursodeoxycholic Acid impurity 86 (CAS CATO-C4X-142286)
- Tafluprost Impurity 20 (CAS 3446-89-7)
- Ipragliflozin Impurity 6 (CAS 951382-34-6)
- (5-((4-Chlorophenyl)thio)-1-methyl-3-phenyl-1H-pyrazol-4-yl)methyl 4-chlorobenzoate (CAS 318248-32-7)
- Ethyl 12-fluorododecanoate (CAS 373-26-2)
- 2-(Pyridin-2-yl)-2,3-dihydrooxazole (CAS 137426-95-0)
- 3-(Furan-2-yl)aniline hydrochloride (CAS 1172481-22-9)
- 1,1,7-Trimethyldecahydro-3a,7-methanocyclopenta[8]annulen-3-yl formate (CAS 58096-47-2)
- 2-(5-Fluoro-1H-indol-1-yl)ethan-1-ol (CAS 1342571-59-8)
- Semaglutide impurity 72 (CAS CATO-C4X-222672)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com