DEPBT

DEPBT
Names
	Preferred IUPAC name Diethyl 4-oxo-1,2,3-benzotriazin-3(4H)-yl phosphate
	Other names DEPBT
Identifiers
CAS Number	165534-43-0;
3D model (JSmol)	Interactive image;
ChemSpider	3500129;
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E number	Lua error in Module:Wikidata at line 880: attempt to index field 'wikibase' (a nil value).
PubChem CID	4293995;
UNII	Z4JZE73XNT ;
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	InChI InChI=1S/C11H14N3O5P/c1-3-17-20(16,18-4-2)19-14-11(15)9-7-5-6-8-10(9)12-13-14/h5-8H,3-4H2,1-2H3 Key: AJDPNPAGZMZOMN-UHFFFAOYSA-N;
	SMILES CCOP(=O)(OCC)On1c(=O)c2ccccc2nn1;
Properties
Chemical formula	C11H14N3O5P
Molar mass	299.22 g/mol
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). (what is ?) Infobox references

DEPBT (3-(diethoxyphosphoryloxy)-1,2,3-benzotriazin-4(3H)-one) is a peptide coupling reagent used in peptide synthesis. It shows remarkable resistance to racemization.^[1]

Fmoc-Dab(Mtt)-OH, a commercially available amino acid building block for solid-phase peptide synthesis (SPPS), was proven to undergo rapid lactamization, instead of reacting with the N-terminal end of the peptide. Compared with other commercially available coupling reagents, DEPBT has shown superior performance in coupling Fmoc-Dab(Mtt)-OH to the N-terminal end of peptide during SPPS, though the approach was regarded as 'costly and tedious'.^[2]

References

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