Etodolac EP Impurity B (8-Methyl Etodolac) CAS 41340-19-6
| CAS No. | 41340-19-6 |
| Molecular Formula | C16H19NO3 |
| Molecular Weight | 273.33 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
CATO manufactures Etodolac EP Impurity B (8-Methyl Etodolac) 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.
CATO supplies Etodolac EP Impurity B (8-Methyl Etodolac) (CAS 41340-19-6), a pharmacopoeial impurity reference standard (molecular formula C16H19NO3, MW 273.33 g/mol) used for the identification and quantification of trace impurities in APIs.
Based on its molecular formula C16H19NO3, Etodolac EP Impurity B (8-Methyl Etodolac) 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 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.
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.) | 1968 |
| Nitrogen Atoms | 1 |
Related Etodolac Standards
- Etodolac EP Impurity C (Etodolac USP Related Compound A) (CAS 109518-47-0)
- Etodolac Sodium Salt (CAS 110781-63-0)
- (R)-(-)-Etodolac (CAS 87226-41-3)
- (S)-(+)-Etodolac (CAS 87249-11-4)
- Etodolac (CAS 41340-25-4)
- Etodolac EP Impurity A (CAS 41339-67-7)
- 4-Oxo etodolac (CAS 111478-86-5)
- Etodolac EP Impurity K (CAS 122188-02-7)
Recommended Standards
- Ethyl 7-(3-cyanophenyl)-7-oxoheptanoate (CAS 951885-63-5)
- Glycosolone (CAS 67879-81-6)
- Ethyl 6-methoxy-2,3,4,9-tetrahydro-1H-carbazole-3-carboxylate (CAS 628294-72-4)
- Isopropyl 1-((tert-butoxycarbonyl)amino)-3-hydroxycyclobutane-1-carboxylate (CAS 2227205-70-9)
- Osimertinib Impurity 69 (CAS CATO-C4X-204569)
- Temozolomide Impurity 23 (CAS 360-97-4)
- Cefprozil Impurity 58 (CAS CATO-C4X-149258)
- 3-(5-(3,4-Diethoxyphenyl)-1H-1,2,4-triazol-3-yl)aniline (CAS 1416346-98-9)
- Gadobutrol Impurity 1 (CAS CATO-C4X-21201)
- 2,3-Dimethylacridine (CAS 97340-75-5)
- N-((7-methoxybenzo[d][1,3]dioxol-5-yl)methyl)cyclopentanamine (CAS 418784-13-1)
- N-[3,5-bis(trifluoromethyl)phenyl]-2,6-difluoro-3-nitrobenzamide (CAS 260554-68-5)
- 1-(4-Methylbenzoyl)-9b-phenyl-1H,2H,3H,5H,9bH-imidazo[2,1-a]isoindol-5-one (CAS 338414-88-3)
- Neuropeptide S (human) (CAS 412938-67-1)
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