Formoterol impurity 113 CAS CATO-C4X-1525113
| CAS No. | CATO-C4X-1525113 |
| Molecular Formula | 2*C19H23N3O5 |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Owing to a flavonoid core, an amide group, a hydroxyl group, an ether linkage, Formoterol impurity 113 is typically pale yellow to yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 373.41 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
CATO supplies Formoterol impurity 113 (CAS CATO-C4X-1525113), a pharmacopoeial impurity reference standard (molecular formula C19H23N3O5, MW 373.41 g/mol) used for the identification and quantification of trace impurities in APIs.
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 | 2*C19H23N3O5 |
| Molecular Weight | 373.41 g/mol |
| Appearance | Pale yellow to yellow crystalline powder |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 3 |
Related Formoterol Standards
- Formoterol Impurity 69 (CAS 100865-09-6)
- Formoterol-d6(Mixture of Diastereomers) (CAS 1020719-45-2)
- Formoterol Impurity 22 HCl (CAS 1049695-95-5)
- Formoterol Impurity 72 (CAS 108971-53-5)
- Formoterol EP Impurity B (CAS 1224588-66-2)
- Formoterol Impurity 19 (CAS 126002-14-0)
- Formoterol Impurity 28 (CAS 126587-86-8)
- Formoterol (Mixture of Diastereomers) (CAS 128954-45-0)
Recommended Standards
- Nizatidine EP Impurity G (CAS 1193434-63-7)
- Difelikefalin Impurity 90 (CAS CATO-C4X-304190)
- Creatine impurity 19 (CAS CATO-C4X-120919)
- N-Methyl-N-(3-oxobutyl)nitrous amide (CAS 89367-15-7)
- (4-(Trifluoromethoxy)pyridin-3-yl)methanamine (CAS 1361748-90-4)
- 1-(2,3-dihydro-1H-indol-1-yl)-2-(piperazin-1-yl)ethan-1-one (CAS 1018497-78-3)
- N-(2-Bromophenyl)-5-(2-chlorophenyl)furan-2-carboxamide (CAS 618400-86-5)
- (5-Chloro-2-(3-(hydroxymethyl)-4H-1,2,4-triazol-4-yl)phenyl)(phenyl)methanone (CAS 54041-98-4)
- 2-acetyl-2-azaspiro[3.3]heptan-6-one (CAS 2641314-23-8)
- Myelin Basic Protein (85-99) Peptide Antagonist (CAS 444305-16-2)
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