2012年3月1日星期四
Properties of ABEI
Product name: ABEI
CAS: 66612-29-1
Molecular Formula: C14H20N4O2
Molecular Weight : 276.33 g/mol
Description of ABEI:
assay:≥90%
mp:259-260 °C(lit.)
storage temp.: 2-8°C
Melting Point: 259-260 °C(lit.)
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2012年2月28日星期二
Sulfo-SMCC of Good Quality
Product Name: Sulfo-SMCC
CAS: 92921-24-9
Molecular Formula: C16H17N2NaO9S
Molecular Weight: 436.37
Chemical name:
Sulfosuccinimidyl-4-(N-maleimidomethyl)cyclohexane-1-carboxylate
Description:Sulfo-SMCC is the reagent of choice for creating stable maleimide-activated carrier proteins that will spontaneously react with sulfhydryls. In this application, the NHS ester of Sulfo-SMCC is reacted with lysine residues on the carrier protein, converting them to reactive maleimides. These relatively stable maleimide-activated intermediates may be lyophilized and stored for later conjugation to a hapten.
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Information of TDBTU
Product Name: TDBTU
CAS No: 125700-69-8
Molecular Formula: C12H16BF4N5O2
Molecular Weight: 349.09
Desctiption :
A coupling reagent that causes very little epimerization and is good for large scale synthesis and PNA synthesis.In the coupling of peptide fragments to form SK&F 107647, TDBTU was shown to produce significantly less epimerization than PyBOP, HBTU, HATU, and many other common coupling reagents.TDBTU was utilized in the large scale synthesis of over 2 kg of SK&F 107647.
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Use of Tosyl azide
Product Name: Tosyl azide
CAS: 941-55-9
Molecular Formula: C7H7N3O2S
Molecular Weight: 197.22
Synonymous: p-Toluenesulfonyl azide; 4-Methylbenzenesulfonyl azide
Description:
Appearance: White crystals.
Storage: Tightly closed, store in cool, dry place.
Uses:Tosyl azide is used for the introduction of azide and diazo functional groups.It is also used as a nitrene source and as a substrate for cycloaddition reactions.
Preparation:Tosyl azide can be prepared by the reaction of tosyl chloride with sodium azide in aqueous acetone.
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BTFFH for Promotion
Sell Good Quality N,N-Diisopropylethylamine
Product Name: N,N-Diisopropylethylamine
Molecular Weight: 129.24
Molecular Formula: C8H19N
CAS: 7087-68-5
Description of N,N-Diisopropylethylamine
Explosive limits:0.7–6.3%
Appearance:Colourless, transparent liquid
Density: 0.742 g mL−1
Melting point:-273.15--50 °C, 0-223 K, -460--58 °F
Boiling point:127 °C, 399.7 K, 260 °F
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Supply DEPC
Product Name: DEPC
Synonymous: Diethyl cyanophosphonate; Diethyl phosphoryl cyanide
CAS: 2942-58-7
Molecular Formula: (CH3CH2O)2P(O)CN
Molecular Weight: 163.11
Description of DEPC :
Appearance: clear, colorless liquid
Density: 1.022 g/mL at 25 °C(lit.)
Boiling Point: 104-105 °C19 mm Hg(lit.)
Flash Point: >80°C
Purity: 90%( Contains triethyl phosphate)
Notes: Coupling reagent for peptide synthesis. Reagent for the phosphorylation of phenols.Activating agent for fluorescent derivatization of carboxylic acids which allows separation by HPLC
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