Formoterol Impurity 39 CAS 477552-93-5
| CAS No. | 477552-93-5 |
| Molecular Formula | C19H24N2O3 |
| Molecular Weight | 328.41 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
The occurrence of Formoterol Impurity 39 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.
Formoterol Impurity 39 (CAS 477552-93-5) is a certified pharmaceutical impurity reference standard with the molecular formula C19H24N2O3 and a molecular weight of 328.41 g/mol.
Formoterol Impurity 39 (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 aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 Formoterol Impurity 39 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 | C19H24N2O3 |
| Molecular Weight | 328.41 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 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 |
| CAS Registry Year (est.) | 2025 |
| Nitrogen Atoms | 2 |
Related Formoterol Standards
- Formoterol impurity 110 (CAS CATO-C4X-1525110)
- Formoterol impurity 140 (CAS CATO-C4X-1525140)
- Formoterol Impurity 62 (CAS CATO-C4X-152562)
- Formoterol Impurity 97 (CAS CATO-C4X-152597)
- 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
- (R,R)-Formoterol Impurity 97 (CAS CATO-C4X-152552)
- ID6YB4W3V8 881202-45-5 Serdemetan [INN] JNJ 26854165 UNII-ID6YB4W3V8 N-(2-(1H-Indol-3-yl)ethyl)-n'-(pyridin-4-yl)benzene-1,4-diamine Serdemetan JNJ-26854165 (CAS 881202-45-5)
- 348622-88-8 5-[(1R)-4-Cyclohexyl-1-[2-(hydroxyamino)-2-oxoethyl]butyl]-1,2,4-oxadiazole-3-carboxamide RL03300 (CAS 348622-88-8)
- Fesoterodine Impurity 8 (CAS CATO-C4X-16448)
- Empagliflozin impurity 274 (CAS 2744280-73-5)
- Spironolactone EP Impurity D (CAS 3079028-52-4)
- Azathioprine Impurity 26 (CAS 18753-82-7)
- DL-alpha-Tocopherylacetate (CAS 52225-20-4)
- Pyroxsulam (CAS 422556-08-9)
- 1-[3-(3-Methoxy-phenoxy)-propyl]-piperazine (CAS 401802-32-2)
- 2-(tert-Butylthio)-5-(piperidin-2-yl)pyridine (CAS 1352493-68-5)
- 4-methoxy-3-(methylsulfanyl)aniline (CAS 1071602-10-2)
- 2-Hydroxy-N-(1,3,4-thiadiazol-2-yl)benzamide (CAS 4447-43-2)
- Semaglutide Impurity 123 (CAS 71997-93-8)
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