Neostigmine impurity 39 CAS CATO-C4X-204239
| CAS No. | CATO-C4X-204239 |
| Molecular Formula | C23H32N4O4 |
| Molecular Weight | 428.52 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 428.52 g/mol gives Neostigmine impurity 39 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies Neostigmine impurity 39 (CAS CATO-C4X-204239), a pharmacopoeial impurity reference standard (molecular formula C23H32N4O4, MW 428.52 g/mol) used for the identification and quantification of trace impurities in APIs.
Neostigmine impurity 39 (C23H32N4O4) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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.
CATO manufactures Neostigmine impurity 39 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 | C23H32N4O4 |
| Molecular Weight | 428.52 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| 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) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 4 |
Related Neostigmine Standards
- Neostigmine impurity 46 (CAS CATO-C4X-204246)
- Neostigmine Impurity 27 (CAS 63468-95-1)
- Neostigmine impurity 41 (CAS CATO-C4X-204241)
- Neostigmine impurity 42 (CAS CATO-C4X-204242)
- Neostigmine Impurity 50 (CAS 16460-28-9)
- Neostigmine Impurity 1 (CAS CATO-C4X-20421)
- Neostigmine Impurity N1 (CAS 2434689-89-9)
- Neostigmine Impurity 51 (CAS 867020-61-9)
Recommended Standards
- Adapalene EP Impurity B (CAS 1346599-76-5)
- (6S,8R,9S,13S,14S,17S)-13-methyl-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthrene-3,6,17-triyl triacetate (1,3,5(10)-Estratriene-3,6α,17β-Triol Triacetate) (CAS 6626-42-2)
- Prednisolone Impurity 29 (CAS 106822-21-3)
- N-(2-(4-Oxo-1-Phenyl-1,3,8-triazaspiro[4.5]decan-8-yl)ethyl)-2-naphthamide (CAS 1130067-34-3)
- Ramelteon Impurity 7 (CAS 196597-78-1)
- Vonoprazan Impurity 211 (CAS CATO-C4X-1020211)
- Bumetanide Impurity 25 (CAS 105641-65-4)
- methyl 5H-pyrrolo[2,3-b]pyrazine-2-carboxylate (CAS 1363381-89-8)
- 1-(2-Chloroethyl)cyclohexan-1-ol (CAS 40894-07-3)
- 6-Methyl-N-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)pyridazine-3-carboxamide (CAS 2246724-42-3)
- 1-(3,4-Dichlorophenyl)-1H-pyrazole-4-carbaldehyde (CAS 445302-83-0)
- 2-(1H-imidazol-5-yl)-N-(pyridin-2-ylmethyl)ethan-1-amine (CAS 120927-21-1)
- 1-Amino-3-(4-bromo-1h-pyrazol-1-yl)cyclopentane-1-carboxylic acid (CAS 1539705-31-1)
- Neuropeptide Y (18-36) (CAS 114495-97-5)
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