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2,5-Diethoxyterephthalohydrazide

CAS Number 1136292-71-1

Chemistry Building Blocks, COF Ligands, Materials, Porous Organic Frameworks


Product Code B3501-1g
Price £61 ex. VAT

Covalent organic frameworks (COFs) terephthalohydrazide ligand

serves as a linker for COFs enabling applications including photocatalytic hydrogen evolution, CO2 sorption, sensors and filtration membranes


Specifications | MSDS | Literature and Reviews


2,5-Diethoxyterephthalohydrazide (CAS number 1136292-71-1), is a para-diethoxybenzene substituted with two carbohydrazide at 1-, 4-potition. 2,5-Diethoxyterephthalohydrazide is well-known for its synthesis of COF-42 with 1,3,5-triformylbenzene. COF-42 is chemically robust due to its hydrazide linkers and is widely employed as the platform for photocatalytic hydrogen evolution. When 2,5-diethoxyterephthalohydrazide reacts with metalated-porphyrinic aldehydes, it produces 2D COFs (MPor-DETH-COFs, M: Zn, Ni, Co). These MPhor-DETH-COFs exhibit photocurrent of up to 0.9 μA/cm2 and an average hydrogen evolution rate up to 413 μmol/g/h.

COFs synthesised from 2,5-diethoxyterephthalohydrazide and triformylbenzene derivatives feature large amount of amines in the network making it favourable for capturing CO2. These COFs show a high surface area of 2336 m2/g and CO2 uptake capacities ranging from 1.14-2.66 mmol/g.

Facile reactions

Facile reactions

Hydrazide possesses excellent reactivity

High Purity 1136292-71-1

High Purity

>98% Purity

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MOF and COF ligands

MOF and COF ligands

hydrazide ligand for cross-linked COF networks

General Information


CAS Number 1136292-71-1
Chemical Formula C12H18N4O4
Full Name 2,5-Diethoxyterephthalohydrazide
Molecular Weight 282.30 g/mol
Synonyms 2,5-diethoxybenzene-1,4-dicarbohydrazide, DETH
Classification / Family Terephthalohydrazides, Hydrazide ligands, COFs ligands, MOF ligands, Hydrogen evolution, CO2 sorption

Chemical Structure


2,5-Diethoxyterephthalohydrazide chemical structure, CAS 1136292-71-1
2,5-Diethoxyterephthalohydrazide chemical structure, CAS 1136292-71-1

Product Details


Purity 98%
Melting Point N/A
Appearance White powder

MSDS Documentation


2,5-Diethoxyterephthalohydrazide2,5-Diethoxyterephthalohydrazide MSDS Sheet

Literature and Reviews


  1. Rational design of covalent cobaloxime-covalent organic framework hybrids for enhanced photocatalytic hydrogen evolution, K. Gottschling et al., J. Am. Chem. Soc., 142, 12146–12156 (2020); DOI: 10.1021/jacs.0c02155.
  2. Molecular insights into carbon dioxide sorption in hydrazone-based covalent organic frameworks with tertiary amine moieties, K. Gottschling et al., Chem. Mater. ,31, 1946–1955 (2019); DOI: 10.1021/acs.chemmater.8b04643.
  3. Light-emitting covalent organic frameworks: fluorescence improving via pinpoint surgery and selective switch-on sensing of anions, Z. Li et al., J. Am. Chem. Soc., 140 (39), 12374–12377 (2018); DOI: 10.1021/jacs.8b08380.

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