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CAS 1320-06-5 | Oil Red O

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Common Name	Oil Red O
CAS Number	1320-06-5	Molecular Weight	408.495
Density	1.2±0.1 g/cm3	Boiling Point	638.8±55.0 °C at 760 mmHg
Molecular Formula	C₂₆H₂₄N₄O	Melting Point	120ºC
MSDS	ChineseUSA	Flash Point	439.7±20.8 °C
Symbol	GHS02, GHS07	Signal Word	Danger

Names

Name	1-(2,5-dimethyl-4-(2,5-dimethylphenylazo)phenylazo)-2-naphthol
Synonym	More Synonyms

Oil Red O BiologicalActivity

Description	Oil Red O is a fat-soluble diazol dye, with a maximum absorption at 518 nm. Oil Red O stains neutral lipids and cholesteryl esters but not biological membranes. Oil Red O can be used for detecting and quantifying hepatic steatosis in mouse liver biopsies. Oil Red O staining efficiently helps to visualize the radical changes that occur in tissues as metabolic disease occurs and progresses[1].
Related Catalog	Signaling Pathways >>Others >>OthersResearch Areas >>Metabolic Disease
References	[1]. Mehlem A, et al. Imaging of neutral lipids by oil red O for analyzing the metabolic status in health and disease. Nat Protoc. 2013 Jun;8(6):1149-54.

Chemical & Physical Properties

Density	1.2±0.1 g/cm3
Boiling Point	638.8±55.0 °C at 760 mmHg
Melting Point	120ºC
Molecular Formula	C₂₆H₂₄N₄O
Molecular Weight	408.495
Flash Point	439.7±20.8 °C
Exact Mass	408.195007
PSA	69.67000
LogP	7.58
Vapour Pressure	0.0±2.0 mmHg at 25°C
Index of Refraction	1.631
Storage condition	Store at RT.

Safety Information

Symbol	GHS02, GHS07
Signal Word	Danger
Hazard Statements	H225-H319-H336
Precautionary Statements	P210-P261-P305 + P351 + P338
Personal Protective Equipment	Eyeshields;Gloves;type N95 (US);type P1 (EN143) respirator filter
Hazard Codes	F,Xi
Risk Phrases	36/37/38-67-36-11
Safety Phrases	S24/25
RIDADR	1993.0
WGK Germany	3
Hazard Class	3.0
HS Code	32041900

Customs

HS Code	32041900

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Synonyms

2-Naphthalenol, 1-[(E)-2-[4-[(E)-2-(2,5-dimethylphenyl)diazenyl]-2,5-dimethylphenyl]diazenyl]-

1-(2,5-Dimethyl-4-(2,5-dimethylphenylazo)phenylazo)-2-naphthol

Oil red O(C.1.26125)

EINECS 215-295-3

MFCD00003898

Solvent Red 27 Sudan Red 5B

Oil Red O

1-[(E)-{4-[(E)-(2,5-Dimethylphenyl)diazenyl]-2,5-dimethylphenyl}diazenyl]-2-naphthol

1-((4-((2,5-Dimethylphenyl)diazenyl)-2,5-dimethylphenyl)diazenyl)naphthalen-2-ol

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