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(CAS RN:165534-43-0 Product Number:D3262)


Synonym DEPBT
Synonym Diethyl 3,4-Dihydro-4-oxo-1,2,3-benzotriazin-3-yl Phosphate

General Information

Product Number D3262

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Purity/Analysis Method >98.0%(HPLC)(N)
Storage Temperature
M.F. / M.W. C11H14N3O5P=299.22
CAS RN 165534-43-0
Related CAS RN
MDL Number
Packaging and Container
  • Product Details
  • Safety & Regulations


Appearance White to Almost white powder to crystal
Purity(HPLC) min. 98.0 area%
Purity(with Total Nitrogen) min. 98.0 %
Melting point 72.0 to 76.0 deg-C
Solubility in Ethylacetate almost transparency


Reaxys-RN 7489262
PubChem SID 87557985


Signal Word Warning
Hazard Statements
  • H315
  • :Causes skin irritation.
  • H319
  • :Causes serious eye irritation.
Precautionary Statements
  • P264
  • :Wash hands and face thoroughly after handling.
  • P280
  • :Wear protective gloves, eye protection.
  • P302+P352+P332+P313+P362+P364
  • :IF ON SKIN: Wash with plenty of water. If skin irritation occurs: Get medical advice or attention. Take off contaminated clothing and wash it before reuse.
  • P305+P351+P338+P337+P313
  • :IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. If eye irritation persists: Get medical advice or attention.

Transport Information

HS Number 2933698090


A Condensing Agent

Experimental procedure: to a solution of 1 (1 eq.), 2 (1 eq.) and DEPBT (1 eq.) in THF, triethylamine (2 eq.) is added. The reaction mixture is stirred at room temperature for 2 h. Saturated NaCl solution is added. The peptide is extracted with EtOAc (3 times). The combined organic layer is washed with 1 mol/L HCl, water, 5% Na2CO3, brine and dried over MgSO4. The solvent is removed under reduced pressure and the resulting residue is recrystallized to afford 3 (94% yield).


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