The CAS register number of 2H-Pyran, tetrahydro-2-(4-pentynyloxy)- is 62992-46-5. It also can be called as 2-(4-Pentynyloxy)tetrahydro-2h-pyran and the systematic name about this chemical is 2-(pent-4-yn-1-yloxy)tetrahydro-2H-pyran. The molecular formula about this chemical is C₁₀H₁₆O₂ and the molecular weight is 168.234. It belongs to the following product categories which include API intermediates; Building Blocks; Heterocyclic Building Blocks; Pyrans and so on.

Physical properties about 2H-Pyran, tetrahydro-2-(4-pentynyloxy)- are: (1)ACD/LogP: 1.23; (2)#H bond acceptors: 2; (3)#Freely Rotating Bonds: 4; (4)Polar Surface Area: 18.46 Å²; (5)Index of Refraction: 1.461; (6)Molar Refractivity: 47.56 cm³; (7)Molar Volume: 173.3 cm³; (8)Polarizability: 18.85x10^-24cm³; (9)Surface Tension: 34.1 dyne/cm; (10)Density: 0.97 g/cm³; (11)Flash Point: 89.2 °C; (12)Enthalpy of Vaporization: 46.18 kJ/mol; (13)Boiling Point: 244.2 °C at 760 mmHg; (14)Vapour Pressure: 0.048 mmHg at 25 °C.

Preparation: this chemical can be prepared by 3,4-dihydro-2H-pyran and pent-4-yn-1-ol. This reaction will need reagent of camphorsulfonic acid and solvent of CH₂Cl₂. The reaction temperature is 0 °C. The yield is about 90%.

Uses of 2H-Pyran, tetrahydro-2-(4-pentynyloxy)-: it can be used to produce 6-tetrahydropyranyloxy-2-hexyn-1-ol with formaldehyde. This reaction will need reagent of n-BuLi and solvent of tetrahydrofuran. This reaction needs ambient temperature. The yield is about 90%.

When you are using this chemical, please be cautious about it as the following:
If you want to use this chemical, do not breathe vapour and avoid contact with skin and eyes. This substance is harmful to the environment, especially when discharged into water. If you want to store it, you should keep the container tightly sealed in dry, cool places and if you store and use this chemical according the rule, it will not be decomposed.

You can still convert the following datas into molecular structure:
(1)SMILES: O(CCCC#C)C1OCCCC1
(2)InChI: InChI=1/C10H16O2/c1-2-3-5-8-11-10-7-4-6-9-12-10/h1,10H,3-9H2
(3)InChIKey: TZRUKFFDSQQSCK-UHFFFAOYAB
(4)Std. InChI: InChI=1S/C10H16O2/c1-2-3-5-8-11-10-7-4-6-9-12-10/h1,10H,3-9H2
(5)Std. InChIKey: TZRUKFFDSQQSCK-UHFFFAOYSA-N