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123889

Sigma-Aldrich

α,α′-Dichloro-o-xylene

98%

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Synonym(s):
1,2-Bis(chloromethyl)benzene, o-Xylylene dichloride
Linear Formula:
C6H4(CH2Cl)2
CAS Number:
Molecular Weight:
175.06
Beilstein/REAXYS Number:
2043675
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.22

Quality Level

assay

98%

form

solid

bp

239-241 °C (lit.)

mp

51-55 °C (lit.)

SMILES string

ClCc1ccccc1CCl

InChI

1S/C8H8Cl2/c9-5-7-3-1-2-4-8(7)6-10/h1-4H,5-6H2

InChI key

FMGGHNGKHRCJLL-UHFFFAOYSA-N

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This Item
12591148514495662
α,α′-Dichloro-o-xylene 98%

123889

α,α′-Dichloro-o-xylene

α,α′-Dibromo-m-xylene 97%

125911

α,α′-Dibromo-m-xylene

o-Xylene-(dimethyl-d6) 98 atom % D

485144

o-Xylene-(dimethyl-d6)

o-Xylene puriss. p.a., ≥99.0% (GC)

95662

o-Xylene

bp

239-241 °C (lit.)

bp

135-140 °C/20 mmHg (lit.)

bp

143-145 °C (lit.)

bp

143-145 °C (lit.)

form

solid

form

solid

form

-

form

liquid

mp

51-55 °C (lit.)

mp

74-77 °C (lit.)

mp

-25--23 °C (lit.)

mp

-26--23 °C (lit.)

General description

α,α′-Dichloro-o-xylene reacts with elemental tellurium and NaI in 2-methoxyethanol to form 1,1-diiodo-3,4-benzo-1-telluracyclopentane.

Application

α,α′−Dichloro-o-xylene was used in solid-phase synthesis of large combinatorial variations of fundamental peptide unit.

pictograms

Exclamation markEnvironment

signalword

Warning

Hazard Classifications

Acute Tox. 4 Oral - Aquatic Acute 1 - Aquatic Chronic 1 - Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3

target_organs

Respiratory system

Storage Class

11 - Combustible Solids

wgk_germany

WGK 3

flash_point_f

257.0 °F - closed cup

flash_point_c

125 °C - closed cup

ppe

Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges


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The synthesis and characterization of α-and β-1, 1-diiodo-3, 4-benzo-1-telluracyclopentane, C8 H8Tel2.
Ziolo RF and Gunther WHH.
Journal of Organometallic Chemistry, 146(3), 245-251 (1978)
William L Scott et al.
Molecules (Basel, Switzerland), 15(7), 4961-4983 (2010-07-27)
Amino acids are Nature's combinatorial building blocks. When substituted on both the amino and carboxyl sides they become the basic scaffold present in all peptides and proteins. We report a solid-phase synthetic route to large combinatorial variations of this fundamental

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