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(CAS RN:78269-85-9 Product Number:T2591)


Synonym Teoc-OSu

General Information

Product Number T2591

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Purity/Analysis Method >98.0%(N)
Storage Temperature 0-10°C
M.F. / M.W. C10H17NO5Si=259.33
CAS RN 78269-85-9
Related CAS RN
MDL Number MFCD02683467
Packaging and Container
  • Product Details
  • Safety & Regulations


Purity(with Total Nitrogen) min. 98.0 %
Melting point 98.0 to 102.0 deg-C


Reaxys-RN 5065504
PubChem SID 87560922


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 2925199590


Reagents for Introduction of the Teoc-Protecting Group

T2590, T2591

Typical Procedure:
To a stirred suspension of the amino acid (1 mmol) in water (1 mL) is added a solution of triethylamine (0.21 mL, 1.5 mmol) in dioxane (1 mL) followed by Teoc-OBt (0.31 g, 1.1 mmol) or Teoc-OSu (0.29 g, 1.1 mmol). The mixture is stirred at room temperature overnight, then diluted with water (5 mL), acidified with saturated potassium hydrogen sulfate solution, and extracted with diethyl ether (3 × 15 mL). The combined organic layers are washed with water (4 × 20 mL), dried with magnesium sulfate, and evaporated. The resultant Teoc-amino acid is purified by crystallization (if solid) or obtained as their cyclohexylammonium salts (if they are oils).


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