The 4-Pentyn-1-ol, with the CAS registry number 5390-04-5, is also known as (3-Hydroxypropyl)acetylene. It belongs to the product categories of Miscellaneous; Acetylenes; Acetylenic Alcohols & Their Derivatives; Alkynes; Organic Building Blocks; Terminal. Its EINECS number is 226-383-6. This chemical's molecular formula is C₅H₈O and molecular weight is 84.12. What's more, its systematic name is pent-4-yn-1-ol. It is stable at common pressure and temperature, and it should be sealed and stored in a cool and dry place. Moreover, it should be protected from light. It is used in the Grignard reagent reaction and aldehyde oxidation reaction.

Physical properties of 4-Pentyn-1-ol are: (1)ACD/LogP: 0.47; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): 0.468; (4)ACD/LogD (pH 7.4): 0.468; (5)ACD/BCF (pH 5.5): 1.334; (6)ACD/BCF (pH 7.4): 1.334; (7)ACD/KOC (pH 5.5): 42.788; (8)ACD/KOC (pH 7.4): 42.788; (9)#H bond acceptors: 1; (10)#H bond donors: 1; (11)#Freely Rotating Bonds: 3; (12)Polar Surface Area: 20.23 Å²; (13)Index of Refraction: 1.445; (14)Molar Refractivity: 24.576 cm³; (15)Molar Volume: 92.34 cm³; (16)Polarizability: 9.743×10^-24cm³; (17)Surface Tension: 36.394 dyne/cm; (18)Density: 0.911 g/cm³; (19)Flash Point: 61.667 °C; (20)Enthalpy of Vaporization: 45.515 kJ/mol; (21)Boiling Point: 153.999 °C at 760 mmHg; (22)Vapour Pressure: 1.195 mmHg at 25°C.

Preparation: this chemical can be prepared by 2-chloromethyl-tetrahydro-furan at the temperature of -60 °C. This reaction will need reagent NaNH₂ and solvent tetrahydrofuran with the reaction time of 1 hour. The yield is about 80%.

Uses of 4-Pentyn-1-ol: it can be used to produce 2-pent-4-ynyloxy-tetrahydro-pyran at the ambient temperature. It will need reagent p-TsOH and solvent diethyl ether. The yield is about 99%.

When you are using this chemical, please be cautious about it as the following:
It is irritating to eyes, respiratory system and skin. In case of contact with eyes, you should rinse immediately with plenty of water and seek medical advice. When using it, you need wear suitable protective clothing, gloves and eye/face protection.

You can still convert the following datas into molecular structure:
(1)SMILES: C#CCCCO
(2)Std. InChI: InChI=1S/C5H8O/c1-2-3-4-5-6/h1,6H,3-5H2
(3)Std. InChIKey: CRWVOXFUXPYTRK-UHFFFAOYSA-N