Dopamine Impurity 41 CAS CATO-C4X-190841
| CAS No. | CATO-C4X-190841 |
| Molecular Formula | C18H21NO3 |
| Molecular Weight | 299.36 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures Dopamine Impurity 41 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.
Dopamine Impurity 41 (CAS CATO-C4X-190841) is a certified pharmaceutical impurity reference standard with the molecular formula C18H21NO3 and a molecular weight of 299.36 g/mol.
Owing to a steroid core, an amide group, a hydroxyl group, an ether linkage, Dopamine Impurity 41 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 299.36 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.
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.
Physical & Chemical Properties
| Molecular Formula | C18H21NO3 |
| Molecular Weight | 299.36 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 1 |
Related Dopamine Standards
- Dopamine Impurity 37 (CAS CATO-C4X-190837)
- Dopamine Impurity 44 (CAS CATO-C4X-190844)
- Dopamine Impurity 80 (CAS CATO-C4X-190880)
- Dopamine Impurity 61 (CAS CATO-C4X-190861)
- Dopamine Impurity 40 (CAS CATO-C4X-190840)
- Dopamine Impurity 97 (CAS CATO-C4X-190897)
- Dopamine Impurity 109 (CAS CATO-C4X-1908109)
- Dopamine Impurity 114 (CAS CATO-C4X-1908114)
Recommended Standards
- Docetaxel Impurity 51 (CAS 147058-27-3)
- Pioglitazone impurity 35 (CAS CATO-C4X-138335)
- Denaverine Impurity 2 (CAS 968-46-7)
- N,N-bis(4-ethoxyphenyl)acetamide (CAS CATO-C3D-263217)
- Teneligliptin Impurity 3 (CAS 401564-36-1)
- Methotrexate Impurity 31 (CAS CATO-C4X-115431)
- Cinacalcet Impurity 27 (CAS 851984-49-1 (free base))
- 3-[(2,4-Dichlorophenyl)methyl]-6-[2-(propan-2-ylidene)hydrazin-1-yl]pyridazine (CAS 338781-18-3)
- 2-(2-Bromo-4-fluoro-5-nitrophenoxy)-1,3-difluoro-5-(trifluoromethyl)benzene (CAS 2244083-57-4)
- 1-(2-Iodo-4-(trifluoromethyl)phenyl)ethan-1-one (CAS 1192931-76-2)
- (3S,5R)-1-Benzyl-5-hydroxymethyl-pyrrolidin-3-ol (CAS 635299-90-0)
- 2-Methoxy-N-(pentan-3-yl)aniline (CAS 1019565-79-7)
- N-[(2-chloro-6-methylpyridin-4-yl)methylidene]-2-methylpropane-2-sulfinamide (CAS 1807939-20-3)
- Semaglutide Impurity 138 (CAS CATO-C4X-2226138)
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