The Phenol, 3-pentadecyl-, with the CAS registry number 501-24-6 and EINECS registry number 207-921-9, has the systematic name of 3-pentadecylphenol. It is a kind of slightly brown to pink-brown crystalline chunks, and belongs to the product category of Intermediates of Dyes and Pigments. And the molecular formula of the chemical is C₂₁H₃₆O.

The characteristics of Phenol, 3-pentadecyl- are as followings: (1)ACD/LogP: 9.38; (2)# of Rule of 5 Violations: 1; (3)ACD/LogD (pH 5.5): 9.38; (4)ACD/LogD (pH 7.4): 9.38; (5)ACD/BCF (pH 5.5): 1000000; (6)ACD/BCF (pH 7.4): 1000000; (7)ACD/KOC (pH 5.5): 3021464.25; (8)ACD/KOC (pH 7.4): 3014922.75; (9)#H bond acceptors: 1; (10)#H bond donors: 1; (11)#Freely Rotating Bonds: 15; (12)Polar Surface Area: 9.23 Å²; (13)Index of Refraction: 1.495; (14)Molar Refractivity: 97.91 cm³; (15)Molar Volume: 335.2 cm³; (16)Polarizability: 38.81×10^-24cm³; (17)Surface Tension: 35.1 dyne/cm; (18)Density: 0.908 g/cm³; (19)Flash Point: 246.3 °C; (20)Enthalpy of Vaporization: 67.85 kJ/mol; (21)Boiling Point: 402 °C at 760 mmHg; (22)Vapour Pressure: 4.88E-07 mmHg at 25°C. 

Uses of Phenol, 3-pentadecyl-: It can react with 2-methoxy-2-methyl-propane to produce 2-tert-butyl-5-n-pentadecylphenol. This reaction will need reagent SnCl4, and the menstruum CH₂Cl₂. The reaction time is 16 hours with ambient temperature, and the yield is about 98%. 
 

You should be cautious while dealing with this chemical. It irritates to eyes, respiratory system and skin, and it is also harmful by inhalation, in contact with skin and if swallowed. Therefore, you had better take the following instructions: Wear suitable protective clothing, and if in case of contacting with eyes, rinse immediately with plenty of water and seek medical advice.
   
Addtionally, the following datas could be converted into the molecular structure:
(1)SMILES: Oc1cc(ccc1)CCCCCCCCCCCCCCC
(2)InChI: InChI=1/C21H36O/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-16-20-17-15-18-21(22)19-20/h15,17-19,22H,2-14,16H2,1H3
(3)InChIKey: PTFIPECGHSYQNR-UHFFFAOYAE