Terbutaline impurity 129 CAS CATO-C4X-1183129
| CAS No. | CATO-C4X-1183129 |
| Molecular Formula | C12H12O5 |
| Molecular Weight | 236.22 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 129.
Terbutaline impurity 129 (CAS CATO-C4X-1183129) is a certified pharmaceutical impurity reference standard with the molecular formula C12H12O5 and a molecular weight of 236.22 g/mol.
Based on its molecular formula C12H12O5, Terbutaline impurity 129 contains a carboxylic acid group, a hydroxyl group, an ether linkage, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 236.22 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. 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.
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 | C12H12O5 |
| Molecular Weight | 236.22 g/mol |
| Appearance | Off-white to pale yellow crystalline powder |
| Purity | 97%+ |
| 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
Related Terbutaline Standards
- Terbutaline impurity 124 (CAS CATO-C4X-1183124)
- Terbutaline impurity 125 (CAS CATO-C4X-1183125)
- Terbutaline Impurity 60 (CAS 35086-59-0)
- Terbutaline EP impurity B (CAS 94120-05-5)
- Terbutaline impound 95 (CAS CATO-C4X-118395)
- Terbutaline-d9 (CAS 1189658-09-0)
- Terbutaline Impurity 32 (CAS CATO-C4X-118332)
- Terbutaline impurity 87 (CAS CATO-C4X-118387)
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