Butylated hydroxytoluene, its cas register number is 128-37-0. It also can be called 2,6-Di-tert-butyl-4-methylphenol ; 2,6-Bis(1,1-dimethylethyl)-4-methylphenol ; 2,6-Di-tert-butyl-p-cresol ;  2,6-Di-tert-butyl-4-methylphenol ; 2,6-Di-tert-butyl-4-methylphenol ; DBPC .It is a white crystalline solid and insoluble in water.

Physical properties about Butylated hydroxytoluene are: (1)ACD/LogP: 5.319; (2)# of Rule of 5 Violations: 1; (3)ACD/LogD (pH 5.5): 5.32; (4)ACD/LogD (pH 7.4): 5.32; (5)ACD/BCF (pH 5.5): 6489.35; (6)ACD/BCF (pH 7.4): 6489.32; (7)ACD/KOC (pH 5.5): 18636.54; (8)ACD/KOC (pH 7.4): 18636.46; (9)#H bond acceptors: 1; (10)#H bond donors: 1; (11)#Freely Rotating Bonds: 3; (12)Index of Refraction: 1.498; (13)Molar Refractivity: 69.734 cm³; (14)Molar Volume: 237.514 cm³; (15)Polarizability: 27.645 10-24cm³; (16)Surface Tension: 30.0310001373291 dyne/cm; (17)Density: 0.928 g/cm³; (18)Flash Point: 118.431 °C ; (19)Enthalpy of Vaporization: 52.167 kJ/mol; (20)Boiling Point: 263.604 °C at 760 mmHg; (21)Vapour Pressure: 0.00600000005215406 mmHg at 25°C

Preparation of Butylated hydroxytoluene: Butylated hydroxytoluene is prepared by the reaction of p-cresol (4-methylphenol) with isobutylene (2-methylpropene) catalysed by sulfuric acid:
CH₃(C₆H₄)OH + 2 CH₂=C(CH₃)₂ → ((CH₃)₃C)₂CH₃C₆H₂OH
It is prepared from 2,6-di-tert-butylphenol by hydroxymethylation or aminomethylation followed by hydrogenolysis.

Uses of Butylated hydroxytoluene is primarily used as an antioxidant food additive (E number E321) as well as an antioxidant additive in cosmetics, pharmaceuticals, jet fuels, rubber, petroleum products, electrical transformer oil, and embalming fluid.

You can still convert the following datas into molecular structure:
(1)InChI=1S/C15H24O/c1-10-8-11(14(2,3)4)13(16)12(9-10)15(5,6)7/h8-9,16H,1-7H3;
(2)InChIKey=NLZUEZXRPGMBCV-UHFFFAOYSA-N;
(3)Smilesc1(c(O)c(C(C)(C)C)cc(c1)C)C(C)(C)C;

The toxicity data is as follows: