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133892

Sigma-Aldrich

2,4-Difluorotoluene

99%

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About This Item

Linear Formula:
CH3C6H3F2
CAS Number:
Molecular Weight:
128.12
EC Number:
MDL number:
UNSPSC Code:
12352100
PubChem Substance ID:
NACRES:
NA.22

Assay

99%

form

liquid

refractive index

n20/D 1.449 (lit.)

bp

113-117 °C (lit.)

density

1.12 g/mL at 25 °C (lit.)

SMILES string

Cc1ccc(F)cc1F

InChI

1S/C7H6F2/c1-5-2-3-6(8)4-7(5)9/h2-4H,1H3

InChI key

MPXDAIBTYWGBSL-UHFFFAOYSA-N

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General description

2,4-Difluorotoluene was synthesized as a nucleotide analog and was incorporated into DNA and undergoes replication by DNA polymerase enzymes.

Application

2,4-Difluorotoluene was used in the synthesis of new hydrophobic isosteres of pyrimidines and purine nucleosides.

Pictograms

Flame

Signal Word

Danger

Hazard Statements

Precautionary Statements

Hazard Classifications

Flam. Liq. 2

Storage Class Code

3 - Flammable liquids

WGK

WGK 3

Flash Point(F)

59.0 °F - closed cup

Flash Point(C)

15 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

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Adriana Irimia et al.
The Journal of biological chemistry, 282(50), 36421-36433 (2007-10-24)
The 2,4-difluorotoluene (DFT) analog of thymine has been used extensively to probe the relative importance of shape and hydrogen bonding for correct nucleotide insertion by DNA polymerases. As far as high fidelity (A-class) polymerases are concerned, shape is considered by
Shuangluo Xia et al.
Biochemistry, 51(7), 1476-1485 (2012-02-07)
We have recently challenged the widely held view that 2,4-difluorotoluene (dF) is a nonpolar isosteric analogue of the nucleotide dT, incapable of forming hydrogen bonds (HBs). To gain a further understanding for the kinetic preference that favors dAMP insertion opposite
Pradeep S Pallan et al.
Journal of the American Chemical Society, 131(35), 12548-12549 (2009-08-19)
Certain DNA polymerases (pols) were found to efficiently insert A opposite the hydrophobic T isostere 2,4-difluorotoluene (F) and vice versa, resulting in the widely held belief that some pols rely on shape rather than H-bonding for accurate replication. Using X-ray
J C Morales et al.
Biochemistry, 39(10), 2626-2632 (2000-03-08)
We describe studies aimed at evaluating the physical factors governing the rate of 3'-end proofreading by the Klenow fragment of E. coli DNA polymerase I. Two nonpolar deoxynucleoside isosteres containing 2,4-difluorotoluene (F) and 4-methylbenzimidazole (Z), which are non-hydrogen-bonding shape mimics
B D Silverman et al.
Journal of biomolecular structure & dynamics, 16(6), 1169-1175 (1999-08-14)
Molecular moment descriptors of the shape and charge distributions of twenty five nucleoside structures have been examined. The structures include thymidine as well as the difluorotoluene nucleoside analog which has been found to pair efficiently with adenine by polymerase catalysis.

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