3-Fluoro-1H-pyrazole CAS 14521-81-4
| CAS No. | 14521-81-4 |
| Molecular Formula | C3H3FN2 |
| Molecular Weight | 86.07 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Under current pharmacopoeial and regulatory frameworks, quality-control requirements for this class of reference material explicitly involve the control of targets including 3-Fluoro-1H-pyrazole.
CATO supplies 3-Fluoro-1H-pyrazole (CAS 14521-81-4), a certified reference material (molecular formula C3H3FN2, MW 86.07 g/mol) for analytical method development and quality control.
3-Fluoro-1H-pyrazole (C3H3FN2) contains a nitrile group, fluorine substitution. Halogen substitution raises its density and boiling point; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Halogen substitution (F/Cl/Br/I) produces a distinctive isotope pattern in mass spectrometry, a valuable aid for qualitative confirmation.
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 | C3H3FN2 |
| Molecular Weight | 86.07 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) | 3.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1961 |
| Halogen Content | F-containing |
| Nitrogen Atoms | 2 |
Related Fluoro Standards
- 2-Fluoro-1H-imidazole (CAS 57212-34-7)
- 3-Fluoro-3H-pyrazole (CAS 921604-87-7)
- 4-Fluoro-1H-imidazole (CAS 30086-17-0)
- 5-Fluoro-1H-pyrazole (CAS 73311-17-8)
- 3-Fluoro-1H-pyrrole (CAS 2358-35-2)
- 5-Fluoro-1H-1,2,4-triazole (CAS 42297-29-0)
- 2-fluoro-2-methylpropanenitrile (CAS 138999-34-5)
- 3-Fluoro-2,5-dihydro-1H-pyrrole (CAS 1776952-44-3)
Recommended Standards
- 3-Fluorofuran (CAS 2105-71-7)
- Vinylene Carbonate (stabilized with BHT) (CAS 872-36-6)
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- Cyanoacetic acid 13C (CAS 67121-16-8)
- (3R,4S)-Methyl 4-(3-chlorophenyl)pyrrolidine-3-carboxylate (CAS 939758-09-5)
- N-(Cyclohexylmethyl)-2-(4-methoxyphenyl)-2H-tetrazole-5-carboxamide (CAS 1396878-42-4)
- N-(4-Chlorophenyl)-3-(thiophene-2-carboxamido)benzofuran-2-carboxamide (CAS 887896-19-7)
- 2-Ethoxycyclohexan-1-ol (CAS 2979-26-2)
- (R)-5-bromo-2-(methoxycarbonyl)-1,2,3,4-tetrahydroisoquinoline-3-carboxylic acid (CAS 1638668-13-9)
- 2-[4-(methylamino)-3-nitrobenzenesulfonamido]acetic acid (CAS 732291-48-4)
- N-((5-(2-Fluorophenyl)isoxazol-3-yl)methyl)-3-(thiophen-2-yl)acrylamide (CAS 1211997-08-8)
- 1-(2,2,2-Trifluoroacetyl)-1H-pyrrol-2(3H)-one (CAS 70399-11-0)
- Dichloro(2-chloroethyl)(methyl)silane (CAS 7787-85-1)
- Tau Peptide (244-274) (Repeat 1 Domain) trifluoroacetate salt (CAS 330456-24-1)
Why CATO?
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