Ramelteon 6-Oxo Impurity CAS 896736-22-4
| CAS No. | 896736-22-4 |
| Molecular Formula | C16H19NO3 |
| Molecular Weight | 273.33 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Based on its molecular formula C16H19NO3, Ramelteon 6-Oxo Impurity contains a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 273.33 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
CATO supplies Ramelteon 6-Oxo Impurity (CAS 896736-22-4), a pharmacopoeial impurity reference standard (molecular formula C16H19NO3, MW 273.33 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 | C16H19NO3 |
| Molecular Weight | 273.33 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 chloroform, dichloromethane, ethyl acetate, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 8.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1987 |
| Nitrogen Atoms | 1 |
Related Ramelteon Standards
- Ramelteon Impurity 28 (CAS CATO-C4X-262228)
- Ramelteon Impurity 15 (CAS 880152-61-4)
- Ramelteon Impurity 33 (CAS 2517684-01-2)
- Ramelteon Impurity 59 (CAS CATO-C4X-262259)
- Ramelteon Metabolite M-II (CAS 896736-21-3)
- Ramelteon Impurity 31 (CAS 1204581-50-9)
- Ramelteon Impurity 36 (CAS CATO-C4X-262236)
- Ramelteon Impurity 38 (CAS 1260675-80-6)
Recommended Standards
- Mavacamten Impurity 5 (CAS 1642288-64-9)
- H-Arg-Val-OH (CAS 2896-20-0)
- Mavacamten Impurity 4 (CAS 1642288-94-5)
- H-Val-Arg-OH (CAS 37682-75-0)
- Tenofovir Impurity 24 (CAS 14047-28-0)
- Itraconazole Impurity 56 (CAS CATO-C4X-149756)
- Cefpirome Impurity 14 (CAS CATO-C4X-120714)
- 3-(((Benzyloxy)carbonyl)(methyl)amino)oxetane-3-carboxylic acid (CAS 1512277-51-8)
- (2,5-Dibutoxy-1,4-phenylene)diboronic acid (CAS 373502-83-1)
- Bicalutamide EP Impurity D (CAS 654-70-6)
- 3-Methyl-[1,2,4]triazolo[4,3-a]pyridine trihydrate (CAS 1087749-43-6)
- (E)-3-(3,4-dimethoxyphenyl)-1-(4-methyl-2-phenylthiazol-5-yl)prop-2-en-1-one (CAS 477847-73-7)
- 2-Bromo-1-naphthonitrile (CAS 138887-02-2)
- D-γ-Glu20-Side-Tirzepatide (CAS CATO-CPTD788929)
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