1429 Results for: "chirality-AR"
Corrected to: chirabite-AR
N-Benzylcinchoninium chloride ≥99.0% (by titrimetric analysis)
Supplier: TCI America
[Chiral Phase-Transfer Catalyst]
CAS Number: 69221-14-3
MDL Number: MFCD00082423
Molecular Formula: C26H29ClN2O
Molecular Weight: 420.98
Purity/Analysis Method: >99.0% (T)
Form: Crystal
Specific rotation [a]20/D: 169 deg (C=0.4, MeOH:H2O=1:5)
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(1S,2S)-1,2-Bis(3,5-dimethylphenyl)-1,2-ethylenediamine phosphate ≥98.0% (by HPLC)
Supplier: TCI America
Purity/Analysis Method: >98.0% (HPLC)
Form: Crystal
Specific rotation [a]20/D: -18 deg (C=1, H2O)
Molecular Formula: C18H24N2
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Rt®-γDEXsa Columns (Fused Silica), Restek
Supplier: Restek
By adding β or γ cyclodextrin to Restek's bonded Rtx®-1701 stationary phase, we greatly enhance overall utility and column lifetime for Restek's chiral columns, compared to columns that have pure cyclodextrin stationary phases.
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(R)-2-Acetoxy-2-phenylacetic acid 98% (by HPLC)
Supplier: Thermo Scientific Chemicals
The (R)- and (S)-isomers are chiral derivatising agents for NMR determination of enantiomeric purity of α-deuterated carboxylic acids, alcohols, and amines.
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Cyclo(-Ala-Gln)
Supplier: Bachem Americas
Also known as dioxopiperazines, piperazine-2,5-diones or DKPs. Diketopiperazines may occur as by-products during peptide synthesis or during the degradation of peptides. These cyclic dipeptides have been detected as taste-modulating compounds in food, they often show biological activity. DKPs are valuable chiral synthons, employed e.g. in Schöllkopf's versatile bislactim ether approach. They also have found use as catalysts for enantioselective synthesis, e.g. in the asymmetric Strecker reaction. See also the TRH metabolite cyclo(-His-Pro), G-1745, and cyclo(-Asp-Phe), G-1695, the major degradation product of aspartame.
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Cyclo(-Glu-Glu)
Supplier: Bachem Americas
Also known as dioxopiperazines, piperazine-2,5-diones or DKPs. Diketopiperazines may occur as by-products during peptide synthesis or during the degradation of peptides. These cyclic dipeptides have been detected as taste-modulating compounds in food, they often show biological activity. DKPs are valuable chiral synthons, employed e.g. in Schöllkopf's versatile bislactim ether approach. They also have found use as catalysts for enantioselective synthesis, e.g. in the asymmetric Strecker reaction. See also the TRH metabolite cyclo(-His-Pro), G-1745, and cyclo(-Asp-Phe), G-1695, the major degradation product of aspartame.
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Cyclo(-Trp-Trp)
Supplier: Bachem Americas
Also known as dioxopiperazines, piperazine-2,5-diones or DKPs. Diketopiperazines may occur as by-products during peptide synthesis or during the degradation of peptides. These cyclic dipeptides have been detected as taste-modulating compounds in food, they often show biological activity. DKPs are valuable chiral synthons, employed e.g. in Schöllkopf's versatile bislactim ether approach. They also have found use as catalysts for enantioselective synthesis, e.g. in the asymmetric Strecker reaction. See also the TRH metabolite cyclo(-His-Pro), G-1745, and cyclo(-Asp-Phe), G-1695, the major degradation product of aspartame.
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Cyclo(-Trp-Tyr)
Supplier: Bachem Americas
Also known as dioxopiperazines, piperazine-2,5-diones or DKPs. Diketopiperazines may occur as by-products during peptide synthesis or during the degradation of peptides. These cyclic dipeptides have been detected as taste-modulating compounds in food, they often show biological activity. DKPs are valuable chiral synthons, employed e.g. in Schöllkopf's versatile bislactim ether approach. They also have found use as catalysts for enantioselective synthesis, e.g. in the asymmetric Strecker reaction. See also the TRH metabolite cyclo(-His-Pro), G-1745, and cyclo(-Asp-Phe), G-1695, the major degradation product of aspartame.
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2,5-Piperazinedione
Supplier: Bachem Americas
Also known as Cyclo(-Gly-Gly), dioxopiperazines, piperazine-2,5-diones or DKPs. Diketopiperazines may occur as by-products during peptide synthesis or during the degradation of peptides. These cyclic dipeptides have been detected as taste-modulating compounds in food, they often show biological activity. DKPs are valuable chiral synthons, employed e.g. in Schöllkopf's versatile bislactim ether approach. They also have found use as catalysts for enantioselective synthesis, e.g. in the asymmetric Strecker reaction. See also the TRH metabolite cyclo(-His-Pro), G-1745, and cyclo(-Asp-Phe), G-1695, the major degradation product of aspartame.
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Cyclo(-Phe-Ser)
Supplier: Bachem Americas
Also known as dioxopiperazines, piperazine-2,5-diones or DKPs. Diketopiperazines may occur as by-products during peptide synthesis or during the degradation of peptides. These cyclic dipeptides have been detected as taste-modulating compounds in food, they often show biological activity. DKPs are valuable chiral synthons, employed e.g. in Schöllkopf's versatile bislactim ether approach. They also have found use as catalysts for enantioselective synthesis, e.g. in the asymmetric Strecker reaction. See also the TRH metabolite cyclo(-His-Pro), G-1745, and cyclo(-Asp-Phe), G-1695, the major degradation product of aspartame.
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Cyclo(-D-Trp-Tyr)
Supplier: Bachem Americas
Also known as dioxopiperazines, piperazine-2,5-diones or DKPs. Diketopiperazines may occur as by-products during peptide synthesis or during the degradation of peptides. These cyclic dipeptides have been detected as taste-modulating compounds in food, they often show biological activity. DKPs are valuable chiral synthons, employed e.g. in Schöllkopf's versatile bislactim ether approach. They also have found use as catalysts for enantioselective synthesis, e.g. in the asymmetric Strecker reaction. See also the TRH metabolite cyclo(-His-Pro), G-1745, and cyclo(-Asp-Phe), G-1695, the major degradation product of aspartame.
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Cyclo(-His-Phe)
Supplier: Bachem Americas
Also known as dioxopiperazines, piperazine-2,5-diones or DKPs. Diketopiperazines may occur as by-products during peptide synthesis or during the degradation of peptides. These cyclic dipeptides have been detected as taste-modulating compounds in food, they often show biological activity. DKPs are valuable chiral synthons, employed e.g. in Schöllkopf's versatile bislactim ether approach. They also have found use as catalysts for enantioselective synthesis, e.g. in the asymmetric Strecker reaction. See also the TRH metabolite cyclo(-His-Pro), G-1745, and cyclo(-Asp-Phe), G-1695, the major degradation product of aspartame.
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Cyclo(-Pro-Val)
Supplier: Bachem Americas
Also known as dioxopiperazines, piperazine-2,5-diones or DKPs. Diketopiperazines may occur as by-products during peptide synthesis or during the degradation of peptides. These cyclic dipeptides have been detected as taste-modulating compounds in food, they often show biological activity. DKPs are valuable chiral synthons, employed e.g. in Schöllkopf's versatile bislactim ether approach. They also have found use as catalysts for enantioselective synthesis, e.g. in the asymmetric Strecker reaction. See also the TRH metabolite cyclo(-His-Pro), G-1745, and cyclo(-Asp-Phe), G-1695, the major degradation product of aspartame.
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(+)-Dibenzoyl-D-tartaric acid, anhydrous 99%
Supplier: Thermo Scientific Chemicals
For chiral resolution.
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(S)-(-)-2,2'-Bis(di-p-tolylphosphino)-1,1'-binaphthyl 98%
Supplier: Thermo Scientific Chemicals
Chiral catalyst ligand
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Sodium sulfate, anhydrous ≥99.0%, granular, AR® ACS 10 - 60 Mesh, Macron Fine Chemicals™
Supplier: AVANTOR PERFORMANCE MATERIAL LLC
AR—The standard Macron Fine Chemicals™ grade of analytical reagents; suitable for laboratory and general use. If the reagent also meets the requirements of the American Chemical Society Committee on Analytical Reagents, it will be denoted as an AR (ACS) reagent.
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Dimethyl sulfoxide ≥99.9% (by GC, corrected for water content), AR® ACS, Macron Fine Chemicals™
Supplier: AVANTOR PERFORMANCE MATERIAL LLC
Clear, colorless liquid.
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Sodium hydrogen carbonate 99.7-100.3% (by acidimetry), AR® ACS, Macron Fine Chemicals™
Supplier: AVANTOR PERFORMANCE MATERIAL LLC
AR—The standard Macron Fine Chemicals™ grade of analytical reagents; suitable for laboratory and general use. If the reagent also meets the requirements of the American Chemical Society Committee on Analytical Reagents, it will be denoted as an AR (ACS) reagent.
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Calcium hydroxide ≥95.0%, powder, AR® ACS, Macron Fine Chemicals™
Supplier: AVANTOR PERFORMANCE MATERIAL LLC
Powder.
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Sodium chloride ≥99.0% (by argentometric titration), crystals, AR® ACS, Macron Fine Chemicals™
Supplier: AVANTOR PERFORMANCE MATERIAL LLC
AR—The standard Macron Fine Chemicals™ grade of analytical reagents; suitable for laboratory and general use.
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Potassium hydrogen carbonate 99.7-100.5%, granular, AR® ACS, Macron Fine Chemicals™
Supplier: AVANTOR PERFORMANCE MATERIAL LLC
Granular.
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Chloroform ≥99.8% (by GC), AR® ACS, Macron Fine Chemicals™
Supplier: AVANTOR PERFORMANCE MATERIAL LLC
ACS—Reagents meeting the requirements of the American Chemical Society Committee on Analytical Reagents. The specifications listed in this catalog are based on the ACS Reagent Chemicals Tenth Edition.
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1-Butanol ≥99.4% (by GC, corrected for water content), AR® ACS, Macron Fine Chemicals™
Supplier: AVANTOR PERFORMANCE MATERIAL LLC
AR—The standard Macron Fine Chemicals™ grade of analytical reagents; suitable for laboratory and general use. If the reagent also meets the requirements of the American Chemical Society Committee on Analytical Reagents, it will be denoted as an AR (ACS) r
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Hydrogen peroxide solution 30%, AR Select® ACS for trace metal analysis, Macron Fine Chemicals™
Supplier: AVANTOR PERFORMANCE MATERIAL LLC
Hydrogen Peroxide, 30% Solution, AR Select® (ACS)
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DL-Sodium lactate 60% (w/w) in aqueous solution
Supplier: Thermo Scientific Chemicals
Useful chiral synthon; building block for depsipeptides
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Avantor® ACE® C18-AR, HPLC Columns, 10 µm
Supplier: HICHROM LIMITED
The Avantor® ACE® C18-AR phase utilises a specially developed ligand combining a C18 chain with integral phenyl functionality, thus combining the benefits of both C18 and phenyl characteristics into a single phase. This can be used for ‘standard’ C18 column separations, but is additionally recommended for separations that involve compounds containing aromatic functionality.
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Potassium iodide ≥99.0%, AR® ACS, free-flowing, Macron Fine Chemicals™
Supplier: AVANTOR PERFORMANCE MATERIAL LLC
Granular.
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Hexane (mixture of isomers) ≥98.5% (by GC), AR® ACS, Macron Fine Chemicals™
Supplier: AVANTOR PERFORMANCE MATERIAL LLC
Hexanes, AR® (ACS)
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Aalborg® Digital Gas Mass Flowmeters
Supplier: VWR International
Stores calibration data for up to 10 gases.
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Masterflex® Direct-Reading Variable-Area Flowmeters for Argon, Acrylic, Avantor®
Supplier: VWR International
Designed for labs and plant processes where multiple gases are used.