Tolterodine Impurity 21 CAS 1043911-42-7
| CAS No. | 1043911-42-7 |
| Molecular Formula | C22H31NO |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Tolterodine Impurity 21 (CAS 1043911-42-7), a pharmacopoeial impurity reference standard (molecular formula C22H31NOC4H6O6, MW 475.58 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Tolterodine Impurity 21 (C22H31NOC4H6O6) contains a nitrogen-containing heterocyclic scaffold, 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 475.58 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.
CATO manufactures Tolterodine Impurity 21 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 | C22H31NO C4H6O6 |
| Molecular Weight | 475.58 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 methanol, acetonitrile, DMSO, water (slightly soluble) |
| 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.) | 1988 |
| Nitrogen Atoms | 1 |
Related Tolterodine Standards
- Tolterodine EP Impurity C (CAS 1161940-88-0)
- Tolterodine Impurity N5 (CAS 1189501-90-3)
- Rac- Tolterodine-D14 Hydrochloride (CAS 1246816-99-8)
- rac-Tolterodine-d14 Tartrate (CAS 1246911-91-0)
- Tolterodine Impurity 4 (CAS 124935-88-2)
- Tolterodine Impurity 18 (CAS 124935-89-3)
- rac-Tolterodine hydrochloride, 98% (CAS 124936-75-0)
- Tolterodine Impurity N3 HCl (CAS 124936-83-0)
Recommended Standards
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- (E)-3-(4-Ethoxyphenyl)acrylic acid (CAS 151539-70-7)
- 5-Hydroxy-2-methyl Isoborneol (CAS 604767-98-8)
- 2-[(5-acetyl-3-cyano-6-methylpyridin-2-yl)sulfanyl]acetic acid (CAS 625366-55-4)
- N-Methyl-2-oxo-1-{[3-(trifluoromethyl)phenyl]methyl}-1,2-dihydropyridine-3-carboxamide (CAS 338754-78-2)
- 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