Terbutaline impurity 113 CAS CATO-C4X-1183113
| CAS No. | CATO-C4X-1183113 |
| Molecular Formula | C18H23NO3 |
| Molecular Weight | 301.38 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
As a process- or degradation-related impurity, Terbutaline impurity 113 (CAS CATO-C4X-1183113, C18H23NO3) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
Owing to a steroid core, an amide group, a hydroxyl group, an ether linkage, Terbutaline impurity 113 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 301.38 g/mol — guide the selection of appropriate sample preparation and analytical techniques. 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).
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 | C18H23NO3 |
| Molecular Weight | 301.38 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) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 1 |
Related Terbutaline Standards
- Terbutaline impurity 114 (CAS CATO-C4X-1183114)
- Terbutaline Impurity 7 (CAS 71324-19-1)
- Terbutaline EP Impurity D (CAS 94109-61-2)
- Terbutaline Impurity 40 (CAS CATO-C4X-118340)
- Terbutaline Impurity 20 (CAS CATO-C4X-118320)
- Terbutaline Impurity 26 (CAS CATO-C4X-118326)
- Terbutaline Impurity 42 (CAS CATO-C4X-118342)
- Terbutaline impurity 117 (CAS CATO-C4X-1183117)
Recommended Standards
- Vildagliptin Impurity 78 (CAS 2246354-69-6)
- Dobutamine Impurity 60 (CAS 63434-00-4)
- Vildagliptin Impurity 15 (CAS 1846606-31-2)
- Atropine impurity 65 (CAS CATO-C4X-148965)
- Palbociclib Impurity 175 (CAS CATO-C4X-1125175)
- Drotaverine Impurity 24 (CAS CATO-C4X-243524)
- Glucose impurity 33 (CAS 64727-31-7&64727-29-3)
- [4-(6-Methoxypyridin-2-yl)oxan-4-yl]methanamine (CAS 1439896-82-8)
- N-[3-(Hydroxymethyl)phenyl]guanidine (CAS 437384-34-4)
- Benzo[d]isoxazole-3-carboxamide (CAS 52046-80-7)
- 3-Isopropyl-6-methylcyclohex-2-en-1-one (CAS 499-74-1)
- 3,5-Dichloro-2,6-difluoro-N-methylpyridin-4-amine (CAS 17723-15-8)
- Methyl 2-(5-bromo-2,3-dioxo-2,3-dihydro-1H-indol-1-yl)acetate (CAS 688038-79-1)
- Insulin Degludec Impurity 27 (CAS CATO-C4X-215727)
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