Formoterol Impurity 97 CAS CATO-C4X-152597
| CAS No. | CATO-C4X-152597 |
| Molecular Formula | C19H24N2O3 |
| Molecular Weight | 328.41 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO supplies Formoterol Impurity 97 (CAS CATO-C4X-152597), a pharmacopoeial impurity reference standard (molecular formula C19H24N2O3, MW 328.41 g/mol) used for the identification and quantification of trace impurities in APIs.
Formoterol Impurity 97 (C19H24N2O3) contains a steroid core, an amide group, a hydroxyl group, an ether linkage. It is notably hygroscopic, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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.
As a certified reference material (CRM), Formoterol Impurity 97 meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C19H24N2O3 |
| Molecular Weight | 328.41 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) | 9.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 2 |
Related Formoterol Standards
- Formoterol impurity 110 (CAS CATO-C4X-1525110)
- Formoterol impurity 140 (CAS CATO-C4X-1525140)
- Formoterol Impurity 39 (CAS 477552-93-5)
- Formoterol Impurity 62 (CAS CATO-C4X-152562)
- Formoterol EP Impurity B (CAS 1224588-66-2)
- Formoterol Impurity 24 (CAS 49861-92-9)
- Formoterol Impurity 42 (CAS CATO-C4X-152542)
- Formoterol Impurity 75 (CAS CATO-C4X-152575)
Recommended Standards
- Fesoterodine Impurity 8 (CAS CATO-C4X-16448)
- (R,R)-Formoterol Impurity 97 (CAS CATO-C4X-152552)
- Peramivir impurity 132 (CAS 2641256-92-8)
- Peramivir Impurity 14 (CAS 2124296-37-1)
- Sulindac Impurity 90 (CAS 53933-60-1)
- Ivabradine Impurity 12 HCl (CAS CATO-C4X-111958)
- Cefoperazone Impurity 47 (CAS CATO-C4X-114947)
- 1-(2-(Chloromethyl)benzo[d]oxazol-7-yl)ethanone (CAS 1135283-66-7)
- 2-Amino-1-(4-chloro-2-methoxyphenyl)ethan-1-one (CAS 1534875-06-3)
- N-(7-Bromo-4-chloro-1-methyl-1H-indazol-3-yl)-N-(4-methoxybenzyl)methanesulfonamide (CAS 2249974-89-6)
- Tipiracil Impurity 4 (CAS CATO-C4X-10054)
- 2-(2-Ethoxyphenyl)-2-methyloxirane (CAS 947518-73-2)
- 1-Oxo-2,3-dihydro-1H-indene-4-boronic Acid Pinacol Ester (CAS 1221239-08-2)
- Semaglutide impurity 36 (CAS CATO-C4X-222636)
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