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1,3-Cyclobutadiene, 1,2,3,4-tetramethyl- is an organic compound with the molecular formula C8H12. It is a derivative of cyclobutadiene, a cyclic diene with four carbon atoms, where each carbon atom is bonded to two hydrogen atoms and one methyl group (CH3). 1,3-Cyclobutadiene, 1,2,3,4-tetramethyl- is characterized by its unique electronic structure and aromaticity, which arises from the delocalization of π electrons across the four carbon atoms. Due to its strained ring structure and high reactivity, 1,3-cyclobutadiene, 1,2,3,4-tetramethyl- is not a stable compound and is typically generated in situ for specific chemical reactions. It is used as an intermediate in the synthesis of various organic compounds and has potential applications in the development of new materials and pharmaceuticals.

1192-66-1

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1192-66-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1192-66-1 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,1,9 and 2 respectively; the second part has 2 digits, 6 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 1192-66:
(6*1)+(5*1)+(4*9)+(3*2)+(2*6)+(1*6)=71
71 % 10 = 1
So 1192-66-1 is a valid CAS Registry Number.

1192-66-1SDS

SAFETY DATA SHEETS

According to Globally Harmonized System of Classification and Labelling of Chemicals (GHS) - Sixth revised edition

Version: 1.0

Creation Date: Aug 18, 2017

Revision Date: Aug 18, 2017

1.Identification

1.1 GHS Product identifier

Product name 1,2,3,4-tetramethylcyclobutadiene

1.2 Other means of identification

Product number -
Other names tetramethylcyclobutadiene

1.3 Recommended use of the chemical and restrictions on use

Identified uses For industry use only.
Uses advised against no data available

1.4 Supplier's details

1.5 Emergency phone number

Emergency phone number -
Service hours Monday to Friday, 9am-5pm (Standard time zone: UTC/GMT +8 hours).

More Details:1192-66-1 SDS

1192-66-1Relevant academic research and scientific papers

A NEW REAGENT FOR THE GENERATION OF TETRAMETHYLCYCLOBUTADIENE UNDER THERMAL OR PHOTOCHEMICAL CONDITIONS

Pitt, Ian G.,Russel, Richard A.,Warrener, Ronald N.

, p. 1627 - 1634 (2007/10/02)

A new, stable, easy to prepare synthetic equivalent for tetramethylcyclobutadiene is described.This reagent can be used under thermal or photochemical conditions and offers advantages over existing alternatives.

Small rings, 36. Attempts to Synthesize Tetramethyltetrahedrane from Alicyclic Precursors

Maier, Guenther,Mayer, Wolfram,Freitag, Hans-Albrecht,Reisenauer, Hans Peter,Askani, Rainer

, p. 3935 - 3958 (2007/10/02)

Synthesis as well as the thermal and photochemical behaviour of compounds with ring skeletons 1 and 3 are described.Whereas the former are accessible by standard procedures the approach to the bicyclobutane derivatives is based on the isomerization of diester 1b into valence isomer 3b which can be achieved in good yield by SiO2 or Al2O3.There are only minor differences in the cleavage of the pairs 1/3 provoked by heating or photochemical excitation.This is even true for irradiations in argon at 10 K.Under those conditions anhydrides 1a and 3a form the samecharge transfer complex 28a between tetramethylcyclobutadiene and phthalic anhydride.A direct detection of tetramethyltetrahedrane using these means is not possible.

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