4-Ethynyl-1-methyl-1H-1,2,3-triazole CAS 1809889-77-7
| CAS No. | 1809889-77-7 |
| Molecular Formula | C5H5N3 |
| Molecular Weight | 107.11 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 4-Ethynyl-1-methyl-1H-1,2,3-triazole.
4-Ethynyl-1-methyl-1H-1,2,3-triazole (CAS 1809889-77-7), molecular formula C5H5N3 and molecular weight 107.11 g/mol, is a CATO reference standard with documented purity and traceability.
Owing to a nitrile group, 4-Ethynyl-1-methyl-1H-1,2,3-triazole is typically off-white to pale yellow liquid. Its solid-state physicochemical attributes — including a molecular weight of 107.11 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.
As a certified reference material (CRM), 4-Ethynyl-1-methyl-1H-1,2,3-triazole meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C5H5N3 |
| Molecular Weight | 107.11 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.) | 1995 |
| Nitrogen Atoms | 3 |
Related Ethynyl Standards
- 5-Ethynyl-1-methyl-1H-1,2,3-triazole (CAS 1602775-02-9)
- 2-Ethynyl-5-methyloxazole (CAS 2304404-76-8)
- 3-Ethynyl-1-methyl-1H-1,2,4-triazole (CAS 55847-47-7)
- 5-Ethynyl-1-methyl-1H-1,2,4-triazole (CAS 55847-46-6)
- 1-Ethynyl-3-azabicyclo[3.1.0]Hexane (CAS 1934439-43-6)
- 1-Ethynyl-2-azabicyclo[2.1.1]Hexane (CAS 2126160-90-3)
- 1-ethynyl-1,1'-bi(cyclopropane) (CAS 1391837-72-1)
- 5-Ethynyl-1-methyl-1h-pyrazole (CAS 19762-15-3)
Recommended Standards
- 2-Methyl-1H-imidazole-1-carbonitrile (CAS 175351-38-9)
- 2-(4-Imidazolyl)acetonitrile (CAS 18502-05-1)
- 1-(Prop-2-yn-1-yl)-1H-1,2,3-triazole (CAS 78909-98-5)
- 1-amino-1H-pyrrole-2-carbonitrile (CAS 159326-66-6)
- 3-(2-Chloro-4-pyrimidyl)-1-methylindole (CAS 1032452-86-0)
- 3-methyl-2,3-dihydro-1H-inden-1-amine hydrochloride (CAS 1251924-40-9)
- 4-CHloro-3-methoxy-2-methyl-pyridine hydrochloride (CAS 1951439-74-9)
- 2-(Chloromethyl)-4-[(2-chlorophenyl)methyl]morpholine (CAS 852400-07-8)
- Methyl 2-fluoro-5-iodonicotinate (CAS 1806571-24-3)
- (E)-3-(1,3-benzodioxol-5-yl)-2-(2-thienyl)-2-propenenitrile (CAS 1002342-12-2)
- 3-(2-Fluoropropan-2-yl)cyclobutan-1-ol (CAS 2358939-01-0)
- 2-Methyl-5-nitro-4H-benzo[d][1,3]oxazin-4-one (CAS 412341-84-5)
- (S)-1-(4-bromopyridin-2-yl)ethan-1-amine (CAS 1213937-49-5)
- 59880-97-6 Chemotactic peptide F-Met-Leu-Phe L-Phenylalanine, N-(N-(N-formyl-L-methionyl)-L-leucyl)- N-Formyl-L-methionyl-L-leucyl-L-phenylalanine N-Formyl-Met-Leu-Phe N-Formylmethionine leucyl-phenylalanine fMLF fMLP (misnomer but widely used) (CAS 59880-97-6)
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