1-(2-Fluoroethyl)-4-methyl-N-(thiophen-2-ylmethyl)-1H-pyrazol-3-amine hydrochloride CAS 1856019-96-9
| CAS No. | 1856019-96-9 |
| Molecular Formula | C11H14FN3S |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
The molecular framework of 1-(2-Fluoroethyl)-4-methyl-N-(thiophen-2-ylmethyl)-1H-pyrazol-3-amine hydrochloride (C11H14FN3SHCl) is characterized by a nitrogen-containing heterocyclic scaffold, a nitrile group, sulfur-containing functionality, fluorine/chlorine substitution. In reversed-phase chromatography, its retention is governed primarily by its high hydrophobicity (logP), 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).
1-(2-Fluoroethyl)-4-methyl-N-(thiophen-2-ylmethyl)-1H-pyrazol-3-amine hydrochloride (CAS 1856019-96-9), molecular formula C11H14FN3SHCl and molecular weight 275.77 g/mol, is a CATO reference standard with documented purity and traceability.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
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 | C11H14FN3S HCl |
| Molecular Weight | 275.77 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep tightly closed to prevent evaporation |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1995 |
| Halogen Content | F/Cl-containing |
| Nitrogen Atoms | 3 |
| Sulfur Atoms | 1 |
Related Fluoroethyl Standards
- Ethyl (2-fluoroethyl) carbonate (CAS 10117-03-0)
- 1-(2-fluoroethyl)-4-(tetramethyl-1,3,2-dioxaborolan-2-yl)-1H-pyrazole (CAS 1049730-39-3)
- 5-(2-Fluoroethyl)-2'-deoxyuridine (CAS 108008-61-3)
- 1-(2-Fluoroethyl)piperazine dihydrochloride (CAS 1089279-64-0)
- 1-(2-fluoroethyl)-4-(piperidin-4-yl)piperazine (CAS 1089280-78-3)
- 1-(2-Fluoroethyl)thiourea (CAS 1126430-66-7)
- 2-(2-Fluoroethyl)-4,6-dimethyl-1,3,5-triazine (CAS 113768-74-4)
- N-(2-Fluoroethyl)aniline hydrochloride (CAS 1195-50-2)
Recommended Standards
- (S)-4-Amino-4-methylisoxazolidin-3-one (CAS 116810-11-8)
- Benzyl 4-Oxo-1-piperidinecarboxylate (CAS 19099-93-5)
- 2-((1,2,2-Trifluorovinyl)thio)ethan-1-ol (CAS 929971-48-2)
- Ethyl 1-cyclohexyl-5-methyl-1H-imidazole-4-carboxylate (CAS 1708254-92-5)
- 3-(Tetrahydrofuran-2-yl)propyl 2-ethylbutanoate (CAS 5451-22-9)
- 2-((5-(4-Nitrophenyl)-1,3,4-oxadiazol-2-yl)thio)-N-(2,4,6-trichlorophenyl)acetamide (CAS 332385-20-3)
- 2-(Difluoromethyl)-3-fluoro-5-methoxypyridine-6-acetonitrile (CAS 1805458-20-1)
- N-(2-Butylbenzofuran-5-yl)methanesulfonamide (CAS 437652-07-8)
- Flumazenil Impurity 16 (CAS CATO-C4X-143216)
- D-Ser39-Tirzepatide (CAS CATO-CPTD788679)
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