Florasulam impurity 51 CAS CATO-C3D-26051
| CAS No. | CATO-C3D-26051 |
| Molecular Formula | C11H6F3N5O3S |
| Molecular Weight | 345.26 g/mol |
| Category | Pharmacopoeial Impurity Standards / EP Impurities |
| Availability | In Stock |
Chemical Structure
Description
Florasulam impurity 51 (CAS CATO-C3D-26051) is a certified pharmaceutical impurity reference standard with the molecular formula C11H6F3N5O3S and a molecular weight of 345.26 g/mol.
The molecular framework of Florasulam impurity 51 (C11H6F3N5O3S) is characterized by a nitrogen-containing heterocyclic scaffold, an amide group, a sulfone group, a hydroxyl group, an ether linkage, fluorine substitution. 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. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
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 | C11H6F3N5O3S |
| Molecular Weight | 345.26 g/mol |
| Purity | ≥95% |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| 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 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 5 |
| Sulfur Atoms | 1 |
Related Florasulam Standards
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- (E)-N,N-Dimethyl-N'-[7-(pyridin-4-yl)-[1,2,4]triazolo[1,5-a]pyrimidin-2-yl]methanimidamide (CAS 303145-76-8)
- Cefpirome Impurity 36 (CAS CATO-C4X-120736)
- 1-(Difluoromethyl)-5,6,7,8-tetrahydroquinolin-2(1H)-one (CAS 1708250-75-2)
- 1-(1-(4-Bromobenzyl)-5-methyl-1H-1,2,3-triazol-4-yl)ethan-1-one (CAS 885950-25-4)
- Semaglutide impurity 76 (CAS CATO-C4X-222676)
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