1-Ethyl-N-((5-fluorothiophen-2-yl)methyl)-3-methyl-1H-pyrazol-4-amine hydrochloride CAS 1856085-83-0
| CAS No. | 1856085-83-0 |
| Molecular Formula | C11H14FN3S |
| Molecular Weight | N/A |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
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.
CATO supplies 1-Ethyl-N-((5-fluorothiophen-2-yl)methyl)-3-methyl-1H-pyrazol-4-amine hydrochloride (CAS 1856085-83-0), a certified reference material (molecular formula C11H14FN3SHCl, MW 275.77 g/mol) for analytical method development and quality control.
The molecular framework of 1-Ethyl-N-((5-fluorothiophen-2-yl)methyl)-3-methyl-1H-pyrazol-4-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).
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.
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 |
Recommended Standards
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- 2-(4-(Difluoromethyl)-6-iodo-5-methoxypyridin-2-yl)acetic acid (CAS 1805072-27-8)
- 2-(1-(2,2,2-Trifluoroethyl)pyrrolidin-3-yl)acetic acid (CAS 1508620-50-5)
- (5-Bromo-2-fluoro-3-methoxyphenyl)(4-methylpiperazin-1-yl)methanone (CAS 2586127-36-6)
- Yttrium(III) acetate tetrahydrate (CAS 85949-60-6)
- 6-Bromo-1H-indole-3-carbonitrile (CAS 224434-83-7)
- Semaglutide impurity 261 (CAS CATO-C4X-2226261)
Why CATO?
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