Terbutaline Impurity 75 CAS CATO-C4X-118375
| CAS No. | CATO-C4X-118375 |
| Molecular Formula | C33H37NO3 |
| Molecular Weight | 495.65 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including Terbutaline Impurity 75.
Terbutaline Impurity 75 (CAS CATO-C4X-118375) is a certified pharmaceutical impurity reference standard with the molecular formula C33H37NO3 and a molecular weight of 495.65 g/mol.
Terbutaline Impurity 75 (C33H37NO3) contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage. Its high carbon-to-hydrogen ratio confers good lipid solubility, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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.
The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.
Physical & Chemical Properties
| Molecular Formula | C33H37NO3 |
| Molecular Weight | 495.65 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| Storage | Store at room temperature, 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) | 16.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 1 |
Related Terbutaline Standards
- Terbutaline Impurity 23 (CAS CATO-C4X-118323)
- Terbutaline Impurity 19 (CAS CATO-C4X-118319)
- Terbutaline impurity 100 (CAS CATO-C4X-1183100)
- Terbutaline Impurity 48 (CAS CATO-C4X-118348)
- Terbutaline impurity 111 (CAS CATO-C4X-1183111)
- Terbutaline impurity 126 (CAS CATO-C4X-1183126)
- Terbutaline impurity 127 (CAS CATO-C4X-1183127)
- Terbutaline impurity 107 (CAS CATO-C4X-1183107)
Recommended Standards
- 1-Dehydroxy-1-dehyro-fexofenadine-d (CAS 154825-95-3)
- C17 Lyso PAF (CAS 111858-52-7)
- Benzyl (2,2-dimethyl-5-(4-(octyloxy)styryl)-1,3-dioxan-5-yl)carbamate (CAS 1313876-84-4)
- Haloperidol Decanoate EP Impurity A (CAS 1797824-64-6)
- Mivacurium chloride Impurity 71 (CAS CATO-C4X-137571)
- Limaprost Impurity 9 (CAS CATO-C4X-21459)
- Cefcapene Impurity 56 (CAS CATO-C4X-182456)
- 4-(1-aminoethyl)-N,N-dimethylbenzene-1-sulfonamide hydrochloride (CAS 1193389-49-9)
- Acibenzolar Acid Impurity 18 (CAS 124370-16-7)
- Ethyl 3-oxo-4-((3-(pyridin-2-yl)-[1,2,4]triazolo[4,3-b]pyridazin-6-yl)thio)butanoate (CAS 868968-29-0)
- 1,1'-(1H-1,2,4-Triazole-3,5-diyl)diethanone (CAS 151675-62-6)
- (3-Bromo-5-isobutoxyphenyl)boronic acid (CAS 918904-39-9)
- Atrasentan Impurity 42 (CAS 1349623-84-2)
- (Cys2)-Neuropeptide Y-8-aminooctanoyl-(D-Cys27)-Neuropeptide Y (25-32) (H-3298.0500) (CAS 128806-04-2)
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