1-Difluoromethyl-4-ethynyl-3-methyl-1h-pyrazole CAS 1855899-98-7
| CAS No. | 1855899-98-7 |
| Molecular Formula | C7H6F2N2 |
| Molecular Weight | 156.13 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 1-Difluoromethyl-4-ethynyl-3-methyl-1h-pyrazole.
1-Difluoromethyl-4-ethynyl-3-methyl-1h-pyrazole (CAS 1855899-98-7), molecular formula C7H6F2N2 and molecular weight 156.13 g/mol, is a CATO reference standard with documented purity and traceability.
Based on its molecular formula C7H6F2N2, 1-Difluoromethyl-4-ethynyl-3-methyl-1h-pyrazole contains a nitrile group, fluorine substitution, an aromatic ring system; these features give the compound characteristic absorption bands in UV spectroscopy. The molecular weight of 156.13 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
CATO manufactures 1-Difluoromethyl-4-ethynyl-3-methyl-1h-pyrazole under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C7H6F2N2 |
| Molecular Weight | 156.13 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (slight halide-like odor, faint amine-like odor, low volatility) |
| 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-containing |
| Nitrogen Atoms | 2 |
Related Difluoromethyl Standards
- 2-(Difluoromethyl)benzaldehyde (CAS 1018678-50-6)
- 1-(Difluoromethyl)-4-ethynyl-5-methyl-1H-pyrazole (CAS 1855889-94-9)
- 3-(Difluoromethyl)-4-ethynyl-1-methyl-1H-pyrazole (CAS 2228148-61-4)
- 3-(Difluoromethyl)benzaldehyde (CAS 945004-44-4)
- 4-(Difluoromethyl)benzaldehyde (CAS 55805-29-3)
- 3-((Difluoromethyl)thio)propanoic acid (CAS 1094226-93-3)
- Methyl 2-((difluoromethyl)thio)acetate (CAS 83494-28-4)
- 2-(Difluoromethyl)-m-xylene (CAS 1214358-11-8)
Recommended Standards
- 1-(2,2-Difluoroethyl)-4-ethynyl-1H-pyrazole (CAS 1855890-49-1)
- 2,5-Difluoroacetophenone (CAS 1979-36-8)
- 2-(2,5-Difluorophenyl)oxirane (CAS 954277-56-6)
- 2,3-Difluoroacetophenone (CAS 18355-80-1)
- N-(prop-2-yn-1-yl)piperazine-1-sulfonamide (CAS 1042642-74-9)
- 3-Methyl-N-(2,2,4-trimethyl-2,3-dihydrobenzofuran-7-yl)benzenesulfonamide (CAS 866042-47-9)
- 6-(sec-Butoxy)-2-(m-tolylthio)pyrimidin-4-amine (CAS 284681-46-5)
- cis-1,2-Diaminocyclohexane (CAS 1436-59-5)
- 1-Keto-3-methylcholanthrene (CAS 3343-07-5)
- 4,5-Dichloro-2-fluorothiophenol (CAS 1806277-28-0)
- 1-(2-Fluoroethyl)piperidine (CAS 45705-52-0)
- 2,2-Difluoro-1-phenylbut-3-en-1-ol (CAS 85864-61-5)
- BI 6015 (CAS 93987-29-2)
- Nonapeptide-1 (CAS 158563-45-2)
Why CATO?
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