Fesoterodine Impurity 2 CAS 1431511-18-0
| CAS No. | 1431511-18-0 |
| Molecular Formula | C26H37NO3 |
| Molecular Weight | 411.58 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Fesoterodine Impurity 2 is closely related to a steroid core, an amide group, a hydroxyl group, an ether linkage in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.
CATO supplies Fesoterodine Impurity 2 (CAS 1431511-18-0), a pharmacopoeial impurity reference standard (molecular formula C26H37NO3, MW 411.58 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Fesoterodine Impurity 2 (C26H37NO3) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. The molecule exhibits a degree of unsaturation (DBE) of 9.0, corresponding to approximately 9 ring(s) or double-bond equivalent(s). With a molecular weight of 411.58 g/mol, it falls into the moderately-high-molecular-weight range. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C26H37NO3 |
| Molecular Weight | 411.58 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | 97%+ |
| 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1991 |
| Nitrogen Atoms | 1 |
Related Fesoterodine Standards
- (S)-Fesoterodine Hydrochloride (CAS 1294517-14-8)
- Fesoterodine Impurity 1 (CAS 250214-44-9)
- Fesoterodine Impurity 5 (CAS 1208313-12-5)
- Fesoterodine Impurity 12 (CAS 1435768-96-9)
- Fesoterodine Impurity 13 (CAS 1333234-71-1)
- Fesoterodine Impurity 10 (CAS CATO-C4X-164410)
- Fesoterodine Impurity 9 (CAS CATO-C4X-16449)
- Fesoterodine Impurity 11 (CAS CATO-C4X-164411)
Recommended Standards
- 2,6-Bis[(3aR,8aS)-(+)-8H-indeno[1,2-d]oxazolin-2-yl)pyridine 357209-32-6 (3AR,3'AR,8AS,8'AS)-2,2'-(2,6-PYRIDINEDIYL)BIS3A,8A-DIHYDRO-8H-INDENO[1,2-D]OXAZOLE;(3AR,8AS)-IN-PYBOX;2,6-BIS[(3AR,8AS)-(+)-8H-INDENO[1,2-D]OXAZOLIN-2-YL]PYRIDINE;2,6-Bis[(3aR,8aS)-(+)-8H-indeno[1,2-d]oxazolin-2-yl)pyridine SC11771 (CAS 357209-32-6)
- Tolterodine Impurity N1 (CAS 1380491-70-2)
- rac-5-Isopropylcarbonyloxymethyl tolterodine (CAS 250214-66-5)
- N-Arachidonoyltaurine (CAS 119959-65-8)
- Melatonin Impurity 22 (CAS CATO-C4X-229222)
- Cefadoxil USP Impurity I (CAS CATO-C4X-122422)
- Dabigatran Impurity 121 (CAS CATO-C4X-1089121)
- 4'-Cyano-[1,1'-biphenyl]-4-yl 4-((6-(acryloyloxy)hexyl)oxy)benzoate (CAS 130166-92-6)
- n-(2-Methoxybenzyl)-3-methyl-1,2,4-thiadiazol-5-amine (CAS 1489176-32-0)
- 1-(2-(4-Methyl-6-morpholinopyridin-3-yl)pyrrolidin-1-yl)ethanone (CAS 1352525-79-1)
- Ethyl 3-(4-bromophenyl)-2-methyl-3-oxopropanoate (CAS 52884-49-8)
- 2-(2-((3,5-Dimethoxybenzyl)thio)thiazol-4-yl)-N-propylacetamide (CAS 942001-71-0)
- 4-((4-Benzylpiperidin-1-yl)methyl)-7-methoxy-2H-chromen-2-one hydrochloride (CAS 1177604-42-0)
- Calcitonin N-Terminal Flanking Peptide (human) (CAS 118277-01-3)
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