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Diethyl fumarate CAS 623-91-6 DEF

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Diethyl fumarate is an organic compound with the chemical formula C₈H₁₂O₄, a molecular weight of 172.18, and a CAS number of 623-91-6. ‌ It is a colorless to slightly yellow liquid at room temperature, with a melting point of 1-2℃, a boiling point of 214-219℃ (760mmHg), a density of 1.052-1.068g/cm³, and a flash point of approximately 93.3-197°F. It is insoluble in water but soluble in organic solvents such as ethanol and ether. ‌ It is mainly used in the fields of chemical synthesis and materials science, such as dienophiles in the Diels-Alder reaction, and also in the development of photochemical 3D printing substrates and the study of polymer properties. Research in the biomedical field has found that it has the potential to inhibit GSK-3 and activate the Nrf2 signaling pathway.
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Diethyl fumarate Basic information
Product Name:	Diethyl fumarate
CAS:	623-91-6
MF:	C8H12O4
MW:	172.18
EINECS:	210-819-7
Mol File:	623-91-6.mol
Diethyl fumarate Chemical Properties
Melting point	1-2 °C (lit.)
Boiling point	218-219 °C (lit.)
density	1.052 g/mL at 25 °C (lit.)
refractive index	n20/D 1.44(lit.)
Fp	197 °F
storage temp.	Sealed in dry,Room Temperature
solubility	3.1g/l
form	Liquid
color	Clear colorless to slightly yellow
Water Solubility	immiscible
BRN	775347
Dielectric constant	6.5（23℃）
Stability:	Stable. Combustible. Incompatible with strong oxidizing agents, acids, bases, reducing agents.
InChIKey	IEPRKVQEAMIZSS-AATRIKPKSA-N
LogP	2.200 (est)
Surface tension	31.4 mN/m at 22°
CAS DataBase Reference	623-91-6(CAS DataBase Reference)
NIST Chemistry Reference	2-Butenedioic acid (E)-, diethyl ester(623-91-6)
EPA Substance Registry System	Diethyl fumarate (623-91-6)