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3,4-Dimethoxy-3-cyclobutene-1,2-dione_Molecular_structure_CAS_5222-73-1)
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3,4-Dimethoxy-3-cyclobutene-1,2-dione

Catalog No. 377406 Name Sigma Aldrich
CAS Number 5222-73-1 Website http://www.sigmaaldrich.com
M. F. C6H8O4 Telephone 1-800-521-8956
M. W. 144.12532 Fax
Purity 99% Email
Storage Chembase ID: 139909

SYNONYMS

Title
3,4-二甲氧基-3-环丁烯-1,2-二酮
IUPAC name
3,4-dimethoxycyclobutane-1,2-dione
IUPAC Traditional name
3,4-dimethoxycyclobutane-1,2-dione
Synonyms
Dimethyl squarate
方酸二甲酯

DATABASE IDS

CAS Number 5222-73-1
MDL Number MFCD00101316
PubChem SID 24863502

PROPERTIES

Linear Formula (CH3O)2C4(=O)2
Purity 99%
Melting Point 55-57 °C(lit.)
GHS Pictograms GHS08
GHS Signal Word Danger
GHS Hazard statements H317-H334
MSDS Link Download
Personal Protective Equipment dust mask type N95 (US), Eyeshields, Faceshields, Gloves
GHS Precautionary statements P261-P280-P342 + P311
Risk Statements 42/43
Safety Statements 22-24/25-26-36/37/39
Storage Temperature 2-8°C
German water hazard class 3

DETAILS

Description (English)
Packaging
1, 5 g in glass bottle
Application
Starting material used to prepare o-quinodimethanes,1 benzocyclobutenes,1 and quinones.2,3
Description (简体中文)
包装
1, 5 g in glass bottle
Application
用于制备邻喹啉二甲烷类、1苯并环丁烯、1和醌类的原料2,3

REFERENCES