[2-(2-Fluorophenyl)ethyl]-hydrazine Sulfate CAS 20942-45-4
| CAS No. | 20942-45-4 |
| Molecular Formula | C8H11FN2 |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
[2-(2-Fluorophenyl)ethyl]-hydrazine Sulfate (CAS 20942-45-4), molecular formula C8H11FN2H2O4S and molecular weight 252.26 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of [2-(2-Fluorophenyl)ethyl]-hydrazine Sulfate (C8H11FN2H2O4S) is characterized by an amide group, a sulfone group, a carboxylic acid 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 analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
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 | C8H11FN2 H2O4S |
| Molecular Weight | 252.26 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation |
| 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) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1962 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 2 |
| Sulfur Atoms | 1 |
Related Fluorophenyl Standards
- 3-[(3-fluorophenyl)methyl]pyrrolidine (CAS 1000198-80-0)
- 3-(3-Fluorophenyl)-3-oxopropanoic acid (CAS 1000530-96-0)
- Ethyl 1-(4-fluorophenyl)-5-oxo-2,5-dihydro-1H-1,2,4-triazole-3-carboxylate (CAS 1000573-68-1)
- 1000574-26-4 2-(4-Fluorophenyl)-6-methylthio-4H-thiopyran-4-one MFCD09877819 (CAS 1000574-26-4)
- Ethyl 1-(2-fluorophenyl)-5-oxo-2,5-dihydro-1H-1,2,4-triazole-3-carboxylate (CAS 1000575-18-7)
- 100074-04-2 5-(4-Fluorophenyl)-1-pentene MFCD11553774 (CAS 100074-04-2)
- 3-(2-Fluorophenyl)-4-hydroxyfuran-2(5H)-one (CAS 100074-44-0)
- N-[2-(4-fluorophenyl)ethyl]-1H-imidazole-1-carboxamide (CAS 1000931-75-8)
Recommended Standards
- 3-Fluoro-5-methyl-N-(pentan-2-yl)aniline (CAS 1502725-19-0)
- 1-[(2-chlorophenyl)methyl]-5-methyl-1h-pyrazol-3-amine (CAS 925607-55-2)
- 3-(2-Fluoro-4-methoxyphenyl)-3-methylbutanoic acid (CAS 1519499-39-8)
- 3-(2,2-dimethyltetrahydropyran-4-yl)prop-2-ynoic acid (CAS 74376-72-0)
- 4-Boc-7-bromo-2,3,4,5-tetrahydrobenzo[f][1,4]oxazepine (CAS 740842-73-3)
- rac-(2R,3R)-4-methyl-3-(1-methyl-1H-pyrazol-4-yl)-5-oxomorpholine-2-carboxylic acid (CAS 1909286-93-6)
- Methyl 7-oxo-6,7-dihydro-5H-pyrrolo[3,4-b]pyridine-3-carboxylate (CAS 1822620-12-1)
- (2-((tert-Butoxycarbonyl)amino)benzo[d]thiazol-4-yl)boronic acid (CAS 2415163-56-1)
- Insulin Degludec Impurity 20 (CAS CATO-C4X-215720)
- Semaglutide impurity 70 (CAS CATO-C4X-222670)
Why CATO?
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