The 4-Methoxyindole, with the CAS registry number 4837-90-5, has the systematic name of 4-methoxy-1H-indole. And the molecular formula of this chemical is C₉H₉NO. It is a kind of light brown to grey crystalline powder which is sensitive to light, and it belongs to the folllowing product categories: Blocks; IndolesOxindoles; Indoles and derivatives; Pyrroles & Indoles; Indoline & Oxindole; Indole Series; Indoles; Simple Indoles; Pyrroles & Indoles; Building Blocks; Heterocyclic Building Blockss. What's more, it is used as medicine intermediate.

The physical properties of 4-Methoxyindole are as following: (1)ACD/LogP: 2.06; (2)# of Rule of 5 Violations: 0 ; (3)#H bond acceptors: 2; (4)#H bond donors: 1; (5)#Freely Rotating Bonds: 1; (6)Polar Surface Area: 14.16 Å²; (7)Index of Refraction: 1.637; (8)Molar Refractivity: 45.2 cm³; (9)Molar Volume: 125.8 cm³; (10)Polarizability: 17.92×10^-24cm³; (11)Surface Tension: 45.7 dyne/cm; (12)Density: 1.169 g/cm³; (13)Flash Point: 109.2 °C; (14)Enthalpy of Vaporization: 52.56 kJ/mol; (15)Boiling Point: 306.9 °C at 760 mmHg; (16)Vapour Pressure: 0.00136 mmHg at 25°C.

Uses of 4-Methoxyindole: It can react with triethoxymethane to produce 3-(4-Methoxyindolin-2-yl)-4-methoxyindole. This reaction will need reagent Cl₃CCOOH, and the solvent CH₂Cl₂. The reaction time is 25 minutes with ambient temperature, and the yield is about 60%.

You should be cautious while dealing with this chemical. It irritates eyes, respiratory system and skin. Therefore, you had better take the following instructions: Avoid contact with skin and eyes; Wear suitable protective clothing; In case of contacting with eyes, rinse immediately with plenty of water and seek medical advice.

You can still convert the following datas into molecular structure:
(1)SMILES: O(c1cccc2c1ccn2)C
(2)InChI: InChI=1/C9H9NO/c1-11-9-4-2-3-8-7(9)5-6-10-8/h2-6,10H,1H3
(3)InChIKey: LUNOXNMCFPFPMO-UHFFFAOYAZ