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009020

009020-1g



TBTU


CAS Number: 125700-67-6
   
Molecular Formula: C11H16BF4N5O
   
Molecular Weight: 321.09
   
MDL Number: MFCD00077413


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009020-1g
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009020-5g
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009020-25g
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009020-100g
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009020-500g
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009020-1Kg
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009020-5Kg
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009020-25Kg
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Purity:99%
Mp:205°(dec.)
 
Pictograms:
Signal Word:Danger
Hazard Statements:H228.1, H315, H319, H335
Precautionary Statements:P210, P233, P240, P261, P280, P304 + P340, P305 + P351 + P338, P403 + P235
UN#:UN1325
Packing Group:II
Hazard Class:4.1
SDS: See MSDS
 
Limited Quantities:1.0 Kg (2.2 lbs)
Excepted Quantities:Max Inner Pack (30g or 30ml) and Max Outer Pack (500g or 500ml)

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Very efficient Coupling reagent used for solid and solution phase peptide synthesis. Compatible with both Boc and Fmoc chemistries. Coupling reactions are complete in as little as six minutes and when HOBt is added and racemization can be reduced to insignificant levels. 1 TBTU is very effective, for instance, in key macrocyclization and coupling steps in the total synthesis of the macrocyclic peptide cyclotheonamide B.2 Excess TBTU can react with the unprotected N-terminal of the peptide and form a guanylidine moiety that blocks further elongation of the peptide. TBTU has been used as an activating agent of carboxylic acids for preparation of 1,2,4, oxadiazoles, amides and phenylhydrazides, and esters.3, 4, 5

1. Tetrahedron Lett. 1989, 30, 1927.
2. J. Org. Chem. 1997, 62, 3880.
3. Tetrahedron Lett. 200142, 1495.
4. Chin. J.Chem. 2008, 26, 1141.
5. ARKIVOC2007, 13, 47.

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