Rebamipide Impurity 37 CAS 1984832-97-4
| CAS No. | 1984832-97-4 |
| Molecular Formula | C19H21BrN2O6 |
| Molecular Weight | 453.28 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 453.28 g/mol gives Rebamipide Impurity 37 distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies Rebamipide Impurity 37 (CAS 1984832-97-4), a pharmacopoeial impurity reference standard (molecular formula C19H21BrN2O6, MW 453.28 g/mol) used for the identification and quantification of trace impurities in APIs.
Structurally, Rebamipide Impurity 37 (C19H21BrN2O6) contains a flavonoid core, an amide group, a hydroxyl group, an ether linkage, bromine substitution. The molecule exhibits a degree of unsaturation (DBE) of 10.0, corresponding to approximately 10 ring(s) or double-bond equivalent(s). With a molecular weight of 453.28 g/mol, it falls into the moderately-high-molecular-weight range. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C19H21BrN2O6 |
| Molecular Weight | 453.28 g/mol |
| Appearance | Pale yellow to yellow crystalline powder. (slight halide-like odor) |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°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; Contains ester bond; hydrolyzes under strong alkaline conditions |
| Degree of Unsaturation (DBE) | 10.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1996 |
| Halogen Content | Br-containing |
| Nitrogen Atoms | 2 |
Related Rebamipide Standards
- Rebamipide impurity 26 (CAS CATO-C4X-152326)
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- 1,4,5,8-Tetraamino-2-(benzyloxy)-7-bromoanthracene-9,10-dione (CAS 88603-46-7)
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- 4-(Chloromethyl)-1-isopropyl-1H-pyrazole hydrochloride (CAS 1401425-39-5)
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Why CATO?
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