Ethacridine Lactate Impurity 19 CAS 55274-57-2
| CAS No. | 55274-57-2 |
| Molecular Formula | C8H11NO2 |
| Molecular Weight | 153.18 g/mol |
| 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.
Ethacridine Lactate Impurity 19 (CAS 55274-57-2) is a certified pharmaceutical impurity reference standard with the molecular formula C8H11NO2 and a molecular weight of 153.18 g/mol.
The molecular framework of Ethacridine Lactate Impurity 19 (C8H11NO2) is characterized by an amino-acid-derived structure, 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 | C8H11NO2 |
| Molecular Weight | 153.18 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | >95% |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 4.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1972 |
| Nitrogen Atoms | 1 |
Related Ethacridine Standards
- Ethacridine Lactate Impurity 9 (CAS 38246-95-6)
- Ethacridine Lactate Impurity 17 (CAS 3420-97-1)
- Ethacridine Lactate Impurity 10 (CAS 5568-33-2)
- Ethacridine Lactate Impurity 21 (CAS CATO-C4X-260921)
- Ethacridine (CAS 442-16-0)
- Ethacridine Lactate EP Impurity A (CAS 144335-20-6)
- Ethacridine Lactate Impurity 26 (CAS CATO-C4X-260926)
- Ethacridine Lactate Impurity 22 (CAS CATO-C4X-260922)
Recommended Standards
- Hexahydrophthalimide (CAS 1444-94-6)
- Perospirone Impurity 20 (CAS 1002359-81-0)
- Ethosuximide impurity 12 (CAS CATO-C4X-262512)
- Perospirone Impurity 2 (CAS 7506-66-3)
- Metoclopramide Impurity 127 (CAS CATO-C4X-1415127)
- Elagolix Impurity 95 (CAS CATO-C4X-206895)
- Inosine impurity 6 (CAS 10280-01-0)
- rac 4-Hydroxy-3-methoxyphenylethylene Glycol (CAS 534-82-7)
- 6-Fluoroisatin (CAS 324-03-8)
- N-(2,3-Dihydrobenzo[b][1,4]dioxin-6-yl)-2-(quinolin-2-ylthio)acetamide (CAS 671198-63-3)
- 5-Methyl-4-phenylthiazol-2-amine (CAS 30709-67-2)
- 2,2,2-Trichloro-N-(tetrahydro-1l4-thiophen-1-ylidene)acetamide (CAS 15436-35-8)
- 5-Cyclopropoxy-4-isopropoxy-N-methylpyridin-3-amine (CAS 1243365-10-7)
- Insulin Degludec Impurity 18 (CAS CATO-C4X-215718)
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