Terbutaline Impurity 33 CAS 1428441-56-8
| CAS No. | 1428441-56-8 |
| Molecular Formula | C12H19NO4 |
| Molecular Weight | 241.28 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of Terbutaline Impurity 33 (C12H19NO4) is characterized by an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
Terbutaline Impurity 33 (CAS 1428441-56-8) is a certified pharmaceutical impurity reference standard with the molecular formula C12H19NO4 and a molecular weight of 241.28 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 Terbutaline Impurity 33 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 | C12H19NO4 |
| Molecular Weight | 241.28 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1991 |
| Nitrogen Atoms | 1 |
Related Terbutaline Standards
- Terbutaline Impurity 64 (CAS CATO-C4X-118364)
- Terbutaline Impurity 9 (CAS 81732-54-9)
- Terbutaline impurity 87 (CAS CATO-C4X-118387)
- Terbutaline Impurity 32 (CAS CATO-C4X-118332)
- Terbutaline (CAS CATO-C4X-1183136)
- Terbutaline EP impurity B (CAS 94120-05-5)
- Terbutaline impound 95 (CAS CATO-C4X-118395)
- Terbutaline impurity 124 (CAS CATO-C4X-1183124)
Recommended Standards
- trans-6-(tert-Butoxycarbonylamino)cyclohex-3-ene-1-carboxylic acid (CAS 865689-24-3)
- tert-Butyl6-hydroxy-3-oxo-8-azabicyclo[3.2.1]octane-8-carboxylate (CAS 2166677-03-6)
- Peramivir impurity 150 (CAS 298716-04-8)
- tert-Butyl-(3-(hydroxymethylene)-4-oxocyclohexyl)carbamate (CAS 911485-70-6)
- (R,R)-Formoterol Impurity 53 (CAS 188690-83-7)
- Fulvestrant EP Impurity B (CAS CATO-C4X-191733)
- Agomelatine Impurity 11 (CAS 138113-07-2)
- Vitamin K1 Impurity 48 (CAS CATO-C4X-220748)
- 1-(2-Amino-3,4-dichlorophenyl)ethanone (CAS 777067-75-1)
- 7-Bromo-2-methyl-1H-indene (CAS 880652-93-7)
- Lanreotide Impurity 15 (CAS CATO-C4X-237015)
- (3R)-3-amino-3-(4-fluorofuran-2-yl)propanoic acid (CAS 1366535-55-8)
- 2-(Cyclopentylmethyl)-2,5-diazabicyclo[2.2.1]heptane (CAS 845866-64-0)
- 302798-54-5 (Leu31,Pro34)-Neuropeptide Y (13-36) (human, rat) MFCD00672463 (CAS 302798-54-5)
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