3-Butynoic acid
ALDRICH/738271 - 95%
Synonym: 2-Ethynylacetic acid
CAS Number: 2345-51-9
Empirical Formula (Hill Notation): C4H4O2
Molecular Weight: 84.07
MDL Number: MFCD02258494
Linear Formula: C4H4O2
Product Type: Chemical
This picture is provided solely for illustration purposes. Optical properties of the actual product may deviate. Relevant product information is printed on labeled products and other accompanying or available information material. This image depicts SKU: 738271-1G
| assay | 95% |
| form | powder |
| InChI | 1S/C4H4O2/c1-2-3-4(5)6/h1 |
| InChI key | KKAHGSQLSTUDAV-UHFFFAOYSA |
| mp | 70-80 °C |
| Quality Level | 100  |
| SMILES string | OC(=O)CC#C |
| Application: | Some of the applications of 3-butynoic acid are: • Synthesis of functionalized γ-butyrolactones and tetrahydrofurans via Conia-ene cyclizations. • Synthesis of allenoates for [2+2] cycloadditions with alkenes. • Phosphine-catalyzed synthesis of highly functionalized coumarins. • Synthesis of various useful organotin reagents via radical hydrostannation of 3-butynoic acid. |
| Packaging: | 1 g in glass bottle |
| Symbol |   GHS05,GHS06 |
| Signal word | Danger |
| Hazard statements | H301 + H311 - H314 |
| Precautionary statements | P260 - P280 - P301 + P310 + P330 - P301 + P330 + P331 - P303 + P361 + P353 - P305 + P351 + P338 |
| Hazard Codes | T |
| Risk Statements | 24/25-34 |
| Safety Statements | 26-36/37/39-45 |
| RIDADR | UN 2923 6.1(8) / PGII |
| WGK Germany | WGK 3 |
| Flash Point(F) | Not applicable |
| Flash Point(C) | Not applicable |
| Purity | 95% |
| mp | 70-80 °C |
| UNSPSC | 12352100 |