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Skeletal formula of EDC
Ball-and-stick model of the EDC molecule
IUPAC name
3D model (JSmol)
ECHA InfoCard 100.015.982
Molar mass 155.25 g·mol−1
Safety data sheet External MSDS (HCl salt)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

1-Ethyl-3-(3-dimethylaminopropyl)carbodiimide (EDC, EDAC or EDCI) is a water-soluble carbodiimide usually obtained as the hydrochloride. It is typically employed in the 4.0-6.0 pH range. It is generally used as a carboxyl activating agent for the coupling of primary amines to yield amide bonds. Additionally, EDC can also be used to activate phosphate groups in order to form phosphomono-esters and phosphodiesters. Common uses for this carbodiimide include peptide synthesis, protein crosslinking to nucleic acids, but also in the preparation of immunoconjugates. EDC is often used in combination with N-hydroxysuccinimide (NHS) for the immobilisation of large biomolecules.


EDC is commercially available. It may be prepared by coupling ethyl isocyanate to N,N-dimethylpropane-1,3-diamine to give a urea, followed by dehydration:[1]

Synthesis of EDC.png


  1. ^ Sheehan, John; Cruickshank, Philip; Boshart, Gregory (1961). "A Convenient Synthesis of Water-Soluble Carbodiimides". J. Org. Chem. 26 (7): 2525. doi:10.1021/jo01351a600. 

Further reading[edit]

  • López-Alonso, JP; Diez-Garcia, F; Font, J; Ribó, M; Vilanova, M; Scholtz, JM; González, C; Vottariello, F; Gotte, G; Libonati, M; Laurents, DV (2009). "Carbodiimide EDC Induces Cross-Links That Stabilize RNase A C-dimer against Dissociation: EDC Adducts Can Affect Protein Net Charge, Conformation and Activity". Bioconjug Chem. 20 (8): 1459. doi:10.1021/bc9001486. 
  • Nakajima, N; Ikada, Y (1995). "Mechanism of Amide Formation by Carbodiimide for Bioconjugation in Aqueous Media". Bioconjug Chem. 6: 123. doi:10.1021/bc00031a015. 

External links[edit]