Dibenzo-18-crown-6

CAS 14187-32-7C20H24O6Chemical Synthesis

Dibenzo-18-crown-6 (CAS: 14187-32-7), a cyclic polyether with the formula C20H24O6 and a molecular weight of 360.40 g/mol, is a highly effective complexing agent. It is widely recognised for its ability to selectively bind alkali metal cations. Dibenzo-18-crown-6 finds significant utility as a phase-transfer catalyst in organic synthesis, particularly in the preparation of complex molecules, and as an ionophore for studying membrane transport.

IUPAC: 2,3,11,12-Dibenzo-1,4,7,10,13,16-hexaoxacyclooctadeca-2,11-diene,6,7,9,10,17,18,20,21-Octahydrodibenzo[b,k][1,4,7,10,13,16]hexaoxacyclooctadecene,DB18C6
Synonyms: 2,3,11,12-Dibenzo-1,4,7,10,13,16-hexaoxacyclooctadeca-2,11-diene6,7,9,10,17,18,20,21-Octahydrodibenzo[b,k][1,4,7,10,13,16]hexaoxacyclooctadeceneDB18C6

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Dibenzo-18-crown-6 (C20H24O6) — chemical structure, CAS 14187-32-7; Chemistry, fine chemical supplied by Tech Serve Solutions

Chemical SynthesisCrown EthersSynthetic Reagents

01 /Applications

Phase-Transfer Catalyst

Utilised in various organic syntheses, including the preparation of monoazaporphyrins. It facilitates reactions between reactants in different phases by complexing cations.

Ionophore for Membrane Transport

Employed to study and facilitate the transfer of specific ions across biological and artificial membranes, aiding in understanding transport mechanisms.

Synthesis of Advanced Materials

Serves as a key synthon in the preparation of advanced materials such as liquid crystal polyesters, contributing unique structural and electronic properties.

02 /Properties

Molecular weight	360.40
Empirical formula	C20H24O6
Assay	98%
Application	Phase-transfer catalyst employed in monoazaporphyrin syntheses.1 Agent used for ion transfer across membranes2 and as a synthon for preparation of liquid crystal polyesters.3
Melting point	162-164 °C(lit.)

03 /Safety & handling

GHS hazard pictogram: Harmful / irritant (GHS07) — Harmful / irritant

Warning

Hazard statements

H319Causes serious eye irritation

Precautionary statements

P305IF IN EYES

Protective equipment	dust mask type N95 (US), Eyeshields, Gloves
Water hazard class (WGK, DE)	2
Hazard codes (EU)	Xi
Risk statements (R)	36
Safety statements (S)	26

Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.

04 /Identifiers & registry

CAS number

14187-32-7

MDL number

MFCD00005098

PubChem substance

24849732

Beilstein registry

1162153

05 /Quality & supply

Documentation

Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.

Supply & logistics

Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.

06 /Frequently asked questions

What is Dibenzo-18-crown-6 used for?

Dibenzo-18-crown-6 is used as a phase-transfer catalyst, an agent for ion transfer across membranes, and a synthon for preparing liquid crystal polyesters.

What are the CAS number and formula for Dibenzo-18-crown-6?

The CAS number is 14187-32-7 and the empirical formula is C20H24O6.

What grade and purity does Tech Serve Solutions supply?

Tech Serve Solutions supplies Dibenzo-18-crown-6 with an assay of 98%. This product is not represented as USP, BP, EP, or pharmacopoeia grade.

How should Dibenzo-18-crown-6 be handled safely?

Dibenzo-18-crown-6 is classified as a GHS07 irritant (Warning, H319). Handling requires a dust mask type N95 (US), eyeshields, and gloves. Ensure good ventilation and avoid dust formation. In case of eye contact, rinse cautiously with water for several minutes (P305 + P351 + P338).