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CAS RN: 91229-91-3 | Product Number: B5216

tert-Butyl N-(tert-Butoxycarbonyl)-L-pyroglutamate

Purity: >98.0%(HPLC)(N)
  • N-(tert-Butoxycarbonyl)-L-pyroglutamic Acid tert-Butyl Ester
  • tert-Butyl N-Boc-L-pyroglutamate
  • N-Boc-L-pyroglutamic Acid tert-Butyl Ester
  • Di-tert-butyl (S)-5-Oxopyrrolidine-1,2-dicarboxylate
  • (S)-5-Oxopyrrolidine-1,2-dicarboxylate Di-tert-butyl Ester
  • Boc-Pyr-OtBu
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Product Number B5216
Purity / Analysis Method >98.0%(HPLC)(N)
Molecular Formula / Molecular Weight C__1__4H__2__3NO__5 = 285.34  
Physical State (20 deg.C) Solid
CAS RN 91229-91-3
Reaxys Registry Number 3558214
PubChem Substance ID 354334547
MDL Number


Appearance White to Almost white powder to crystal
Purity(HPLC) min. 98.0 area%
Purity(with Total Nitrogen) min. 98.0 %
Melting point 55.0 to 59.0 °C
Specific rotation [a]20/D -38.0 to -43.0 deg(C=1,CHCl3)
Properties (reference)
Melting Point 58 °C
Specific Rotation -42° (C=1,CHCl3)
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HS Number 2933790090
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