Etodolac EP Impurity L Ammonium Salt CAS 2789629-50-9 (free base)
| CAS No. | 2789629-50-9 (free base) |
| Molecular Formula | C17H21NO3 |
| Molecular Weight | N/A |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
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 process- or degradation-related impurity, Etodolac EP Impurity L Ammonium Salt (CAS 2789629-50-9 (free base), C17H21NO3H3N) is essential for impurity profiling, related-substances testing, and forced-degradation studies in pharmaceutical development.
The molecular framework of Etodolac EP Impurity L Ammonium Salt (C17H21NO3H3N) is characterized by a steroid core, an amide group, a hydroxyl group, an ether linkage. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
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 | C17H21NO3 H3N |
| Molecular Weight | 304.39 g/mol |
| Appearance | Off-white to pale 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) | 7.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| Nitrogen Atoms | 2 |
Related Etodolac Standards
- Etodolac Impurity 2 (CAS 101901-06-8)
- Etodolac Impurity 3 (CAS 101901-07-9)
- Etodolac Impurity 1 (CAS 101901-08-0)
- Etodolac EP Impurity C (Etodolac USP Related Compound A) (CAS 109518-47-0)
- Etodolac Sodium Salt (CAS 110781-63-0)
- 4-Oxo etodolac (CAS 111478-86-5)
- Etodolac EP Impurity J (CAS 115066-03-0)
- Etodolac EP Impurity K (CAS 122188-02-7)
Recommended Standards
- Drotaverine Impurity 19 (CAS CATO-C4X-243519)
- Peramivir Impurity 82 (CAS CATO-C4X-183382)
- Tepotinib impurity 24 (CAS CATO-C4X-337424)
- (S)-2-((1-(2-(4-Methoxy-3-(2-morpholinoethoxy)phenyl)-5-methylthiazol-4-yl)ethyl)thio)pyrimidine-4,6-diamine (CAS 2107280-58-8)
- (1R,3r,5S)-Spiro[bicyclo[3.2.1]octane-8,2'-[1,3]dioxolan]-3-ol (CAS 91036-42-9)
- 2-Amino-3-(3-iodophenyl)propanoic acid (CAS 20846-38-2)
- (4-Ethoxyoxepan-4-yl)methanamine (CAS 1468680-30-9)
- (R)-12-((S)-8-Fluoro-6,11-dihydrodibenzo[b,e]thiepin-11-yl)-7-hydroxy-3,4,12,12a-tetrahydro-1H-[1,4]oxazino[3,4-c]pyrido[2,1-f][1,2,4]triazine-6,8-dione (CAS 1985605-62-6)
- Perfluorophenyl N-(((9H-fluoren-9-yl)methoxy)carbonyl)-O-(tert-butyl)-D-threoninate (CAS 449764-45-8)
- Tirzepatide (CAS 2023788-19-2)
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