5-ethynyl-1H-imidazole CAS 57121-48-9
| CAS No. | 57121-48-9 |
| Molecular Formula | C5H4N2 |
| Molecular Weight | 92.10 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
5-ethynyl-1H-imidazole (C5H4N2) contains a nitrile group. Its physicochemical properties are representative of its class; these physicochemical properties determine the optimal preparation and storage of its standard solutions. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
5-ethynyl-1H-imidazole (CAS 57121-48-9), molecular formula C5H4N2 and molecular weight 92.10 g/mol, is a CATO reference standard with documented purity and traceability.
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 5-ethynyl-1H-imidazole 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 | C5H4N2 |
| Molecular Weight | 92.10 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | Light-sensitive; avoid direct strong light |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| CAS Registry Year (est.) | 1973 |
| Nitrogen Atoms | 2 |
Related ethynyl Standards
- 1-Ethynyl-1H-pyrazole (CAS 103244-40-2)
- 1-Ethynyl-1H-imidazole (CAS 1197210-75-5)
- 2-Ethynyl-1H-imidazole (CAS 57121-47-8)
- 4-Ethynyl-1H-pyrazole (CAS 57121-49-0)
- 2-Ethynyl-1H-pyrrole (CAS 67237-51-8)
- 3-Ethynyl-1h-pyrrole (CAS 71580-43-3)
- 5-ethynyl-1H-triazole (CAS 119720-87-5)
- 5-ethynyl-1H-1,2,4-triazole (CAS 2138143-45-8)
Recommended Standards
- O,O'-(Ethane-1,2-diyl)bis(hydroxylamine) (CAS 5627-11-2)
- 3-Ethynylfuran (CAS 51061-85-9)
- 1-Fluoro-2-methylpropan-2-ol (CAS 353-80-0)
- 2-Fluoro-2-methyl-1-propanol (CAS 3109-99-7)
- 2-((8-Hydroxyquinolin-5-yl)imino)-1-phenylethanone (CAS 25912-19-0)
- Methyl 5-amino-2-fluoro-3-(trifluoromethyl)benzoate (CAS 1804875-17-9)
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- (2S,4S)-tert-butyl 4-(acetylthio)-2-((tert-butoxycarbonyl(sulfamoyl)amino)methyl)pyrrolidine-1-carboxylate (CAS 148017-43-0)
- 3,5-Dimethyl-4-propoxybenzenethiol (CAS 1379207-30-3)
- 2-Hydroxy-3-methoxy-5-methylbenzaldehyde (CAS 7452-10-0)
- 902936-39-4 4-Pyridin-4-yl-2-(1H-pyrrol-1-yl)thiophene-3-carboxylic acid MFCD15732479 (CAS 902936-39-4)
- 4-Propyl-1H-pyrazole-1-carboximidamide (CAS 756422-62-5)
- 1-(4-(Ethylamino)piperidin-1-yl)ethanone (CAS 88535-88-0)
- (Des-Bromo)-Neuropeptide B (1-23) (human) (CAS 434897-64-0)
Why CATO?
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