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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5,6,7,8-Tetrahydro-5,5,8,8-tetramethyl-2-naphthylamine at Best Price
Product name: 5,6,7,8-Tetrahydro-5,5,8,8-tetramethyl-2-naphthylamine
CAS:92050-16-3
Molecular Formula: C14H21N
Molecular Weight: 203.33
Description of 5,6,7,8-Tetrahydro-5,5,8,8-tetramethyl-2-naphthylamine:
Density:0.944
Melting point:63-65 ºC
Purity: >95%
Specifications:ENTERPRISE STANDARD
Alternate Name:5,5,8,8-TETRAMETHYL-5,6,7,8-TETRAHYDRONAPHTHALEN-2-YLAMINE; 5,5,8,8-TETRAMETHYL-5,6,7,8-TETRAHYDRONAPHTHALEN-2-YLAMINE; 5,6,7,8-TETRAHYDRO-5,5,8,8-TETRAMETHYL-2-NAPHTHALENAMINE; 2-NAPHTHALENAMINE, 5,6,7,8-TETRAHYDRO-5,5,8,8-TETRAMETHYL-; 5,5,8,8-TETRAMETHYL-5,6,7,8-TETRAHYDRONAPHTHALEN-2-YLAMINE; 5,6,7,8-TETRAHYDRO-5,5,8,8-TETRAMETHYL-2-NAPHTHALENAMINE; 5,6,7,8-TETRAHYDRO-5,5,8,8-TETRAMETHYL-2-NAPHTHYLAMINE; 5,6,7,8-TETRAHYDRO-5,5,8,8-TETRAMETHYLNAPTHALEN-2-AMINE
More about:5,6,7,8-Tetrahydro-5,5,8,8-tetramethyl-2-naphthylamine
CAS:92050-16-3
Molecular Formula: C14H21N
Molecular Weight: 203.33
Description of 5,6,7,8-Tetrahydro-5,5,8,8-tetramethyl-2-naphthylamine:
Density:0.944
Melting point:63-65 ºC
Purity: >95%
Specifications:ENTERPRISE STANDARD
Alternate Name:5,5,8,8-TETRAMETHYL-5,6,7,8-TETRAHYDRONAPHTHALEN-2-YLAMINE; 5,5,8,8-TETRAMETHYL-5,6,7,8-TETRAHYDRONAPHTHALEN-2-YLAMINE; 5,6,7,8-TETRAHYDRO-5,5,8,8-TETRAMETHYL-2-NAPHTHALENAMINE; 2-NAPHTHALENAMINE, 5,6,7,8-TETRAHYDRO-5,5,8,8-TETRAMETHYL-; 5,5,8,8-TETRAMETHYL-5,6,7,8-TETRAHYDRONAPHTHALEN-2-YLAMINE; 5,6,7,8-TETRAHYDRO-5,5,8,8-TETRAMETHYL-2-NAPHTHALENAMINE; 5,6,7,8-TETRAHYDRO-5,5,8,8-TETRAMETHYL-2-NAPHTHYLAMINE; 5,6,7,8-TETRAHYDRO-5,5,8,8-TETRAMETHYLNAPTHALEN-2-AMINE
More about:5,6,7,8-Tetrahydro-5,5,8,8-tetramethyl-2-naphthylamine
Application of Diethyl(3-pyridyl)borane
Product Name: Diethyl(3-pyridyl)borane
CAS: 89878-14-8
Molecular Formula: C9H14BN
Molecular Weight: 147.03
Description of Diethyl(3-pyridyl)borane :
Application:
Reactant for:
1. Preparation of inhibitors of ataxia telangiectasia mutated and Rad3 related (ATR) protein kinase as potential anticancer agents1
2. N-Methylation reactions of the pyridyl group2
3.Palladium catalyzed amination reactions3
4.Intramolecular Heck reactions4
5.Coupling reactions5
6.Synthesis of trisubstituted pyrimidines from polyhalopyrimidines via Suzuki coupling6
More about:Diethyl(3-pyridyl)borane
CAS: 89878-14-8
Molecular Formula: C9H14BN
Molecular Weight: 147.03
Description of Diethyl(3-pyridyl)borane :
Application:
Reactant for:
1. Preparation of inhibitors of ataxia telangiectasia mutated and Rad3 related (ATR) protein kinase as potential anticancer agents1
2. N-Methylation reactions of the pyridyl group2
3.Palladium catalyzed amination reactions3
4.Intramolecular Heck reactions4
5.Coupling reactions5
6.Synthesis of trisubstituted pyrimidines from polyhalopyrimidines via Suzuki coupling6
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S-Methyl-L-Cysteine Sulfoxide at Cheap Price
Product name: S-Methyl-L-Cysteine Sulfoxide
CAS:6853-87-8
Molecular Weight: 151.18
Molecular Formula: C4H9NO3S
Description: S-Methyl-L-cysteine sulfoxide (SMCSO) was present in serveral cultivars of cabbag at 690-1120 ppm.SMCSO was not inhibitory to Leuconostoc mesenteroides,but its hydrolysis product,methyl methanethiolsulfinate,was inhibitory.MMTSO was formed in resh cabbage juice and in a model system containing SMCSO and rsh cabbage(PH 4.0) precipitate,perhaps by cysteine sulfoxide lyase.
More about:S-Methyl-L-cysteine sulfoxide
CAS:6853-87-8
Molecular Weight: 151.18
Molecular Formula: C4H9NO3S
Description: S-Methyl-L-cysteine sulfoxide (SMCSO) was present in serveral cultivars of cabbag at 690-1120 ppm.SMCSO was not inhibitory to Leuconostoc mesenteroides,but its hydrolysis product,methyl methanethiolsulfinate,was inhibitory.MMTSO was formed in resh cabbage juice and in a model system containing SMCSO and rsh cabbage(PH 4.0) precipitate,perhaps by cysteine sulfoxide lyase.
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Best Supplier of Boc Anhydride
Product name: Boc Anhydride
Synonyms: Di-tert-butyl pyrocarbonate, Dicarbonic acid bis(1, 1-dimethylethyl)ester, Pyrocarbonic acid di-tert-butyl ester, BOC-anhydride.
CAS:24424-99-5
Molecular Formula: C10H18O5
Molecular Weight: 218.25
Description of Boc Anhydride
Appearance: colourless solid
Melting point: 22–24 °C
Boiling point :56–57 °C (0.5 mmHg
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Professional Supplier of Trisyl azide
Product name: Trisyl azide
CAS: 36982-84-0
Molecular Formula: C15H23N3O2S
Molecular Weight: 309.43
Description of trisyl azide:
assay ≥98% (HPLC)
concentration :10%±2% in toluene
total impurities :≤0.015% water
refractive index: n20/D 1.499
storage temp: 2-8°C
More about:Trisyl azide
4-Dimethylaminopyridine News
Product name: 4-Dimethylaminopyridine
Description: 4-Dimethylaminopyridine (DMAP) is a derivative of pyridine with the chemical formula (CH3)2NC5H4N. This colourless solid is a useful nucleophilic catalyst for a variety of reactions such as esterifications with anhydrides, the Baylis-Hillman reaction, hydrosilylations, tritylation, the Steglich rearrangement, Staudinger synthesis of β-lactams and many more. Chiral DMAP analogues are used in kinetic resolution experiments of mainly secondary alcohols and Evans auxiliary type amides.
More about:4-Dimethylaminopyridine
Safety:DMAP has a relatively high toxicity and is particularly dangerous because of its ability to be absorbed through the skin. It is also corrosive.
More about:4-Dimethylaminopyridine
Description: 4-Dimethylaminopyridine (DMAP) is a derivative of pyridine with the chemical formula (CH3)2NC5H4N. This colourless solid is a useful nucleophilic catalyst for a variety of reactions such as esterifications with anhydrides, the Baylis-Hillman reaction, hydrosilylations, tritylation, the Steglich rearrangement, Staudinger synthesis of β-lactams and many more. Chiral DMAP analogues are used in kinetic resolution experiments of mainly secondary alcohols and Evans auxiliary type amides.
More about:4-Dimethylaminopyridine
Safety:DMAP has a relatively high toxicity and is particularly dangerous because of its ability to be absorbed through the skin. It is also corrosive.
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Information of p-Toluenesulfonyl chloride
Product name: p-Toluenesulfonyl chloride
CAS:98-59-9
Molecular Formula: C7H7ClO2S
Molecular Weight: 190.65
Description of p-Toluenesulfonyl chloride :
SYNONYMS 4-Toluolsulfonyl chloride; p-Tosyl Chloride; PTSC
PHYSICAL STATE: White crystalline powder
MELTING POINT:67 C
BOILING POINT:134 C (Decomposes).
Highly reactive hygroscopic. Hydrolyzes to hydrogen chloride and p-toluenesulfonic acid
More about: p-Toluenesulfonyl chloride
CAS:98-59-9
Molecular Formula: C7H7ClO2S
Molecular Weight: 190.65
Description of p-Toluenesulfonyl chloride :
SYNONYMS 4-Toluolsulfonyl chloride; p-Tosyl Chloride; PTSC
PHYSICAL STATE: White crystalline powder
MELTING POINT:67 C
BOILING POINT:134 C (Decomposes).
Highly reactive hygroscopic. Hydrolyzes to hydrogen chloride and p-toluenesulfonic acid
More about: p-Toluenesulfonyl chloride
What is DMTMM
9-Fluorenylmethanol, 9-Fluorenemethanol Supplier
Product name: 9-Fluorenylmethanol, 9-Fluorenemethanol
CAS:24324-17-2
Molecular Formula: C14H12O
Molecular Weight: 196.25
Description of 9-Fluorenylmethanol, 9-Fluorenemethanol:
Category: N-Protecting Reagents
Appearance: White to off-white crystalline powder
More about:9-Fluorenylmethanol, 9-Fluorenemethanol
BOP on Hot Sale
What is 1 1-Carbonyldipyrrolidine
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Synonymous: Bis(tetramethylen)urea; Carbodipiperidide
CAS: 81759-25-3
Molecular Formula: C9H16N2O
Molecular Weight: 168.24
Description of 1 1-Carbonyldipyrrolidine:
Refractive index:1.513
Flash point:113 oC
Form:White or yellowish crystal
More about:1 1-Carbonyldipyrrolidine
ABEI for Sale
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