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Fmoc-O-Tert-Butyl-L-Threonine

Fmoc-O-Tert-Butyl-L-Threonine / CAS : 71989-35-0

Appearance White to off white crystalline powder UN 3077
HS 29242990 DG Class 0
Synonyms (2S,3R)-2-(9H-Fluoren-9-Ylmethoxycarbonylamino)-3-[(2-Methylpropan-2-Yl)Oxy]Butanoic Acid; Nalpha-9-Fluorenylmethoxycarbonyl-L-Threonine Tert-Butyl Ester; Fmoc-O-Tert-Butyl-L-Threonine (Fmoc-L-Thr(Tbu)-Oh); Fmoc-Thr(Bu)-Oh; N-Alpha-Fmoc-O-T-Butyl-L-Threo; L-Threonine, O-(1,1-Dimethylethyl)-N-(9H-Fluoren-9-Ylmethoxy)Carbonyl-; N-(9-Fluorenylmethoxycarbonyl)-2-Tert-Butyl-L-Threonine; (9-Fluorenylmethoxycarbonyl)-O-Tert-Butyl-L-Threonine; N-Fmoc-O-Tert-Butyl-L-Threonine, Fmoc-O-Tert-Butyl-L-Threonine
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Properties

Summary

Formula
C23H27NO5
Molecular Mass
397.46400
Exact Mass
397.18900
PSA
84.86000
Logp
4.57280
IUPAC
(2S,3R)-2-(9H-fluoren-9-ylmethoxycarbonylamino)-3-[(2-methylpropan-2-yl)oxy]butanoic acid
SMILES
CC(C(C(=O)O)NC(=O)OCC1C2=CC=CC=C2C3=CC=CC=C13)OC(C)(C)C

Attribute classification

Matter Classification
organic
Category
API & Intermediate > Pharmaceutical Intermediates

Chemical and Physical Properties

Melting Point
131-134 °C
Density
1.197 g/cm3
Boiling Point
581.7ºC at 760 mmHg
Flash Point
305.6ºC
Appearance
White to off white crystalline powder

Export information

HS Code
29242990
Export Rebate
13%
UN No.
3077
DG-Class
0
Risk Code
R36/37/38
Safety Label
Xi

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