Dopamine Impurity 91 CAS 344791-86-2
| CAS No. | 344791-86-2 |
| Molecular Formula | C10H13BrO |
| Molecular Weight | 229.11 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Owing to a hydroxyl group, an ether linkage, bromine substitution, an aromatic ring system, Dopamine Impurity 91 is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 229.11 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
Dopamine Impurity 91 (CAS 344791-86-2) is a certified pharmaceutical impurity reference standard with the molecular formula C10H13BrO and a molecular weight of 229.11 g/mol.
This reference standard supports related-substances testing and method development in line with ICH Q3A/Q3B guidance on impurity control, and is suitable for system suitability testing and forced-degradation studies.
CATO manufactures Dopamine Impurity 91 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 | C10H13BrO |
| Molecular Weight | 229.11 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor) |
| Purity | ＞95% |
| Storage | Store at room temperature, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 2025 |
| Halogen Content | Br-containing |
Related Dopamine Standards
- Dopamine Impurity 113 (CAS CATO-C4X-1908113)
- Dopamine 3-O-Sulfate (CAS 51317-41-0)
- Dopamine 4-O-Sulfate (CAS 38339-02-5)
- Dopamine Impurity (CAS 83442-18-6)
- Dopamine Impurity 6 (CAS 37630-20-9)
- Dopamine Impurity 10 (CAS 22568-47-4)
- Dopamine Impurity 5 (CAS 2815-67-0)
- Dopamine Impurity 8-d10 (Dibenzylamine-d10) (CAS 923282-09-1)
Recommended Standards
- 2-bromo-4-(sec-butyl)phenol 2-bromo-4-sec-butylphenol 63762-55-0 (CAS 63762-55-0)
- Eprazinone Impurity 1 (CAS CATO-C4X-33111)
- Salmeterol Impurity 6 (CAS 75906-36-4)
- (1-(4-Bromophenyl)propyl)hydrazine (CAS 1016762-03-0)
- Apalutamide Impurity 50 (CAS CATO-C4X-274950)
- Indacaterol Impurity 40 （S-Isomer） (CAS 312753-76-7)
- Teneligliptin Impurity 44 (CAS CATO-C4X-176044)
- 2-(2-Bromophenyl)-N-cyclopropylacetamide (CAS 1150163-66-8)
- 6-Benzyl-4H-thieno[3,2-b]pyrrol-5(6H)-one (CAS 112800-39-2)
- 2-Bromo-1-(2-(trifluoromethoxy)phenyl)ethan-1-one (CAS 530141-40-3)
- 2-(1,3-Dimethylbutyl)propanedioic Acid 1,3-Diethyl Ester (CAS 249728-64-1)
- 1-Chloro-2-(2,2,2-trifluoroethoxy)benzene (CAS 84328-68-7)
- 1-(tert-Butoxycarbonyl)-2,5,6,7-tetrahydro-1H-azepine-4-carboxylic acid (CAS 2137832-17-6)
- Peptide 46 (H-4054.0500) (CAS 192122-40-0)
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