The Dibenzo-18-crown-6, with the CAS registry number 14187-32-7, is also known as Dibenzo(b,k)(1,4,7,10,13,16)hexaoxacyclooctadecane. It belongs to the product categories of API intermediates; Crown Ethers; Functional Materials; Macrocycles for Host-Guest Chemistry. Its EINECS number is 238-041-3. This chemical's molecular formula is C₂₀H₂₄O₆ and molecular weight is 360.40. What's more, its systematic name is 6,7,9,10,17,18,20,21-octahydrodibenzo[b,k][1,4,7,10,13,16]hexaoxacyclooctadecine. Its classification codes are: (1)Drug / Therapeutic Agent; (2)Skin / Eye Irritant. It is stable at common pressure and temperature, and it should be sealed and stored in a cool, ventilated and dry place. Moreover, it should be protected from oxides and light. This chemical is a benzannulated crown ether. It is related to the non-benzannulated 18-crown-6. It is used as phase transfer catalyst and coordination reagent.

Physical properties of Dibenzo-18-crown-6 are: (1)ACD/LogP: 1.84; (2)# of Rule of 5 Violations: 0; (3)ACD/LogD (pH 5.5): 1.84; (4)ACD/LogD (pH 7.4): 1.84; (5)ACD/BCF (pH 5.5): 14.63; (6)ACD/BCF (pH 7.4): 14.63; (7)ACD/KOC (pH 5.5): 237.5; (8)ACD/KOC (pH 7.4): 237.5; (9)#H bond acceptors: 6; (10)#H bond donors: 0; (11)#Freely Rotating Bonds: 0; (12)Polar Surface Area: 55.38 Å²; (13)Index of Refraction: 1.5; (14)Molar Refractivity: 95.7 cm³; (15)Molar Volume: 325.1 cm³; (16)Polarizability: 37.94×10^-24cm³; (17)Surface Tension: 39.3 dyne/cm; (18)Density: 1.108 g/cm³; (19)Flash Point: 206 °C; (20)Enthalpy of Vaporization: 74.31 kJ/mol; (21)Boiling Point: 503.1 °C at 760 mmHg; (22)Vapour Pressure: 9.33E-10 mmHg at 25°C.

Preparation: this chemical can be synthesized from catechol and bis(chloroethyl)ether.

Uses of Dibenzo-18-crown-6: it can be used to produce cis-4,4'-Dinitrodibenzo-18-krone-6 at the temperature of 80 °C. It will need reagents 63% aq. HNO₃, La(NO₃)₃·6H₂O and solvent acetonitrile with the reaction time of 30 min. The yield is about 100%.

When you are using this chemical, please be cautious about it as the following:
This chemical is harmful by inhalation, in contact with skin and if swallowed. It is irritating to eyes, respiratory system and skin. In case of contact with eyes, you should rinse immediately with plenty of water and seek medical advice. When using it, you need wear suitable protective clothing, gloves and eye/face protection.

You can still convert the following datas into molecular structure:
(1)SMILES: O1c3c(OCCOCCOc2ccccc2OCCOCC1)cccc3
(2)Std. InChI: InChI=1S/C20H24O6/c1-2-6-18-17(5-1)23-13-9-21-11-15-25-19-7-3-4-8-20(19)26-16-12-22-10-14-24-18/h1-8H,9-16H2
(3)Std. InChIKey: YSSSPARMOAYJTE-UHFFFAOYSA-N

The toxicity data is as follows: