The Fluorescent brightener 135, with the CAS registry number 12224-12-3, has the systematic name of 2,2'-(E)-ethene-1,2-diylbis(5-methyl-1,3-benzoxazole). It is a kind of organics, and should be stored in the dry and cool environment. And the molecular formula of the chemical is C₁₈H₁₄N₂O₂.

The characteristics of Fluorescent brightener 135 are as followings: (1)ACD/LogP: 5.20; (2)# of Rule of 5 Violations: 1; (3)ACD/LogD (pH 5.5): 5.2; (4)ACD/LogD (pH 7.4): 5.2; (5)ACD/BCF (pH 5.5): 5236.59; (6)ACD/BCF (pH 7.4): 5236.68; (7)ACD/KOC (pH 5.5): 15983.98; (8)ACD/KOC (pH 7.4): 15984.26; (9)#H bond acceptors: 4; (10)#H bond donors: 0; (11)#Freely Rotating Bonds: 2; (12)Polar Surface Area: 52.06 Å²; (13)Index of Refraction: 1.727; (14)Molar Refractivity: 89.76 cm³; (15)Molar Volume: 225.4 cm³; (16)Polarizability: 35.58×10^-24cm³; (17)Surface Tension: 57.6 dyne/cm; (18)Density: 1.287 g/cm³; (19)Flash Point: 237.3 °C; (20)Enthalpy of Vaporization: 70.58 kJ/mol; (21)Boiling Point: 471.2 °C at 760 mmHg; (22)Vapour Pressure: 1.35E-08 mmHg at 25°C.

Addtionally, the following datas could be converted into the molecular structure:
(1)SMILES: n1c4cc(ccc4oc1\C=C\c2nc3cc(ccc3o2)C)C
(2)InChI: InChI=1/C18H14N2O2/c1-11-3-5-15-13(9-11)19-17(21-15)7-8-18-20-14-10-12(2)4-6-16(14)22-18/h3-10H,1-2H3/b8-7+
(3)InChIKey: VKRZNAWSCAUDRQ-BQYQJAHWBN