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Benzoin isopropyl ether

$58

  • Brand : BIOFRON

  • Catalogue Number : BN-O1087

  • Specification : 98%(HPLC)

  • CAS number : 6652-28-4

  • Formula : C17H18O2

  • Molecular Weight : 254.32

  • PUBCHEM ID : 110912

  • Volume : 5mg

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Catalogue Number

BN-O1087

Analysis Method

Specification

98%(HPLC)

Storage

2-8°C

Molecular Weight

254.32

Appearance

Botanical Source

Structure Type

Category

SMILES

CC(C)OC(C1=CC=CC=C1)C(=O)C2=CC=CC=C2

Synonyms

benzoin isopropyl ether

IUPAC Name

1,2-diphenyl-2-propan-2-yloxyethanone

Density

1.065 g/cm3

Solubility

Flash Point

152.1ºC

Boiling Point

175-180 °C10 mm Hg(lit.)

Melting Point

78-80 °C(lit.)

InChl

InChl Key

MSAHTMIQULFMRG-UHFFFAOYSA-N

WGK Germany

RID/ADR

HS Code Reference

Personal Projective Equipment

Correct Usage

For Reference Standard and R&D, Not for Human Use Directly.

Meta Tag

provides coniferyl ferulate(CAS#:6652-28-4) MSDS, density, melting point, boiling point, structure, formula, molecular weight etc. Articles of coniferyl ferulate are included as well.>> amp version: coniferyl ferulate

No Technical Documents Available For This Product.

PMID

25806856

Abstract

Chirality plays a fundamental role in biology and chemistry and the precise control of chirality in a catalytic conversion is a key to modern synthesis most prominently seen in the production of pharmaceuticals. In enantioselective metal-based catalysis, access to each product enantiomer is commonly achieved through ligand design with chiral bisphosphines being widely applied as privileged ligands. Switchable phosphine ligands, in which chirality is modulated through an external trigger signal, might offer attractive possibilities to change enantioselectivity in a catalytic process in a non-invasive manner avoiding renewed ligand synthesis. Here we demonstrate that a photoswitchable chiral bisphosphine based on a unidirectional light-driven molecular motor, can be used to invert the stereoselectivity of a palladium-catalysed asymmetric transformation. It is shown that light-induced changes in geometry and helicity of the switchable ligand enable excellent selectivity towards the racemic or individual enantiomers of the product in a Pd-catalysed desymmetrization reaction.

Title

Dynamic control of chirality in phosphine ligands for enantioselective catalysis

Author

Depeng Zhao,1 Thomas M. Neubauer,1 and Ben L. Feringaa,1

Publish date

2015 Mar 25;

PMID

1677771

Abstract

A system for assaying human interchromosomal recombination in vitro was developed, using a cell line containing two different mutant thymidine kinase genes (TK) on chromosomes 17. Heteroalleles were generated in the TK+/+ parent B-lymphoblast cell line WIL-2 by repeated exposure to the alkylating nitrogen mustard ICR-191, which preferentially causes +1 or -1 frameshifts. Resulting TK-/- mutants were selected in medium containing the toxic thymidine analog trifluorothymidine. Mutations were characterized by exon-specific polymerase chain reaction amplification and direct sequencing. In two lines, heterozygous frameshifts were located in exons 4 and 7 of the TK gene separated by approximately 8 kilobases. These lines undergo spontaneous reversion to TK+ at a frequency of less than 10(-7), and revertants can be selected in cytidine/hypoxanthine/aminopterin/thymidine medium. The nature and location of these heteroallelic mutations make large deletions, rearrangements, nondisjunction, and reduplication unlikely mechanisms for reversion to TK+. The mode of reversion to TK+ was specifically assessed by DNA sequencing, use of single-strand conformation polymorphisms, and analysis of various restriction fragment length polymorphisms (RFLPs) linked to the TK gene on chromosome 17. Our data suggest that a proportion of revertants has undergone recombination and gene conversion at the TK locus, with concomitant loss of frameshifts and allele loss at linked RFLPs. Models are presented for the origin of two recombinants.

Title

A system for assaying homologous recombination at the endogenous human thymidine kinase gene.

Author

M B Benjamin, H Potter, D W Yandell, and J B Little

Publish date

1991 Aug 1;

PMID

3876560

Abstract

The monoclonal antibodies (mAb) DA6.147, DA6.164, and HIG.48 against human Ia antigens, but not the W6/32 mAb against human class I major histocompatibility complex antigens or the anti-monocyte OKM1 and 63D3 mAb, stimulated monocytes to secrete interleukin 1 (IL-1). IL-1 was measured by its property of promoting the production of interleukin 2 (IL-2) by phytohemagglutinin-treated LBRM-33 clone 1A5 cells. IL-1 activity induced by anti-Ia antibodies could be detected 24 hr after initiation of the cultures and reached its highest levels at days 3-4 of culture. Concentrations of 1 microgram/ml or higher of the anti-Ia antibodies induced monocytes to secrete significant levels of IL-1 activity. The anti-Ia mAb induced Ia-bearing but not Ia-negative monocytes to secrete IL-1. Both Ia-positive and Ia-negative monocytes produced IL-1 activity under the stimulus of lipopolysaccharide. It is concluded that the DA6.147, DA6.164, and HIG.48 mAb stimulate secretion of IL-1 by interacting Ia antigens on monocytes. The data support the view that besides serving as restricting elements for recognition of foreign antigens by T cells, Ia antigens may also function as transducer elements

Title

Monoclonal antibodies against human Ia antigens stimulate monocytes to secrete interleukin 1.

Author

R Palacios

Publish date

1985 Oct;


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