Ethoxyquin

Q: What are the downstream products of Ethoxyquin?

Related downstream products(CAS) of Ethoxyquin: 1502-22-3;16489-90-0;7345-50-8;825-25-2;612-50-0.

Q: What is the molecular formula of Ethoxyquin?

Molecular formula of Ethoxyquin is C14H19NO.

Q: What is the InChIKey of Ethoxyquin?

InChIKey of Ethoxyquin is DECIPOUIJURFOJ-UHFFFAOYSA-N.

Q: What is the SMILES notation of Ethoxyquin?

SMILES notation of Ethoxyquin is CCOc1ccc2c(c1)C(C)=CC(C)(C)N2.

Q: What is the polar surface area (PSA) of Ethoxyquin?

Polar surface area (PSA) of Ethoxyquin is 21.26000.

Q: What English synonyms does Ethoxyquin have?

English synonyms of Ethoxyquin: 6-Ethoxy-2,2,4-trimethyl-1,2-dihydroquinoline, EINECS 202-075-7, 6-Ethoxy-1,2-dihydro-2,2,4-trimethylquinoline, emq, quinoled, 1,2-dihydro-2,2,4-trimethylquinolin-6-yl ethyl ether, UNII-9T1410R4OR, 2,2,4-trimethyl-6-ethoxy-1,2-dihydroquinoline, nocracaw, amea100, Santoquin, usafb-24, antageaw, niflex, ETMDQ, 1,2-dihydro-6-ethoxy-2,2,4-trimethylQUINOLINE, Santoflex, niflexd, MFCD00023883, Ethoxyquin.

Q: How is the water solubility of Ethoxyquin?

Water solubility of Ethoxyquin: ethanol: 50 mL/L, clear, brown | <0.1 g/100 mL at 20 ºC.

Q: What are the upstream materials of Ethoxyquin?

Related upstream materials(CAS) of Ethoxyquin: 156-43-4;67-64-1;123-42-2.

Q: What is the boiling point of Ethoxyquin?

Boiling point of Ethoxyquin is 333.1±42.0 °C at 760 mmHg.

Modify Date: 2026-07-01 10:55:18

Ethoxyquin structure	Common Name	Ethoxyquin
	CAS Number	91-53-2	Molecular Weight	217.307
	Density	1.0±0.1 g/cm3	Boiling Point	333.1±42.0 °C at 760 mmHg
	Molecular Formula	C₁₄H₁₉NO	Melting Point	<0ºC
	MSDS	Chinese USA	Flash Point	137.8±17.3 °C
	Symbol	GHS07	Signal Word	Warning

Use of Ethoxyquin

Ethoxyquin is an antioxidant which has been used in animal feed for many years and also an inhibitor of heat shock protein 90 (Hsp90).

This table lists Chinese names, IUPAC names and various aliases of this chemical substance.

Name	Ethoxyquin
Synonym	More Synonyms

This table contains bioactivity, target information and biological‑assay experimental data of this compound.

Description	Ethoxyquin is an antioxidant which has been used in animal feed for many years and also an inhibitor of heat shock protein 90 (Hsp90).
Related Catalog	Research Areas >> Cancer
Target	HSP90
In Vitro	Ethoxyquin (EQ) does not block Paclitaxel’s (PTX’s) ability to induce cell death in 4 different breast cancer cell lines. Results demonstrate that only when Hsp90 level is down regulated is neuroprotec-tion provided by Ethoxyquin (EQ) no longer seen[2]. It is found that Ethoxyquin provides neuroprotection with a best efficacy range from 30 to 300 nM. It is interesting to note that higher (μM) concentrations of Ethoxyquin do not provide further neuroprotection and in fact at these higher concentrations Ethoxyquin loses its neuroprotective effects[3].
In Vivo	Ethoxyquin (EQ) provides a dose-dependent neuroprotection. Although all 3 doses of Ethoxyquin provide partial neuroprotection against reduction in intraepidermal nerve fiber density, the peak efficacy is with the 75 μg/kg dose[2]. Rats treated with Ethoxyquin (EQ) alone or control vehicle treated rats gain weight as expected under normal physiological conditions[3].
Kinase Assay	To evaluate the impact of Ethoxyquin (EQ) on Paclitaxel’s (PTX’s) ability to kill breast cancer cells, conditions for culturing 4 cancer cell lines and measuring the ATP levels are optimized for the 96-well plate format. Briefly, 1,500 cells/well in media are plated in 96-well plates for 24 hours. Constant concentrations of PTX with or without Ethoxyquin are added to the wells for another 24 hours. Cellular ATP levels are measured using kit according tomanufacturer ’s protocol[2].
Cell Assay	Briefly, DRGs are harvested from embryonic day 14.5 rats according to standard protocols, then cells are plated onto collagen-coated glass coverslips and allowed to extend neurites for 24 hours in media (Neurobasal medium, 50 mM pencillin-streptomycin (PS), 0.2% FBS, 0.5 mM glutamine, 1×B-27 supplement, 0.2% glucose,10 ng/mL glial cell line-derived neurotrophic factor). Ethoxyquin (EQ) or vehicle control is added to the wells for another 24-hour incubation. DRG cells are fixed with 4% paraformaldehyde and stained with anti-βIII-tubulin antibody to delineate the axons. Axon lengths are measured in multiple fields using a random sampling method[2].
Animal Admin	To examine the effect of Ethoxyquin (EQ) on Paclitaxel’s (PTX’s) ability to reduce tumor burden in vivo, a mouse model in which breast cancer cell line SUM-159 (3×106 tumor cells suspended in phosphate-buffered saline in a final volume of 0.15 mL) is injected subcutaneously into adult male nude mice. When the tumor size reaches 5 mm in diameter, the animals are randomly assigned to PTX or PTX with Ethoxyquin groups. Ethoxyquin is given by intraperitoneal administration on a daily basis for 3 weeks. At the end of 3 weeks, animals are euthanized and tumor size and weight are measured (n=5 per group)[2].
References	[1]. Sadikot T, et al. Development of a high-throughput screening cancer cell-based luciferase refolding assay for identifying Hsp90 inhibitors. Assay Drug Dev Technol. 2013 Oct;11(8):478-88. [2]. Zhu J, et al. Ethoxyquin prevents chemotherapy-induced neurotoxicity via Hsp90 modulation. Ann Neurol. 2013 Dec;74(6):893-904. [3]. Zhu J, et al. Ethoxyquin provides neuroprotection against cisplatin-induced neurotoxicity. Sci Rep. 2016 Jun 28;6:28861.

This table shows physicochemical parameters including melting point, boiling point, density, solubility and optical rotation. Missing data is marked as N/A.

Density	1.0±0.1 g/cm3
Boiling Point	333.1±42.0 °C at 760 mmHg
Melting Point	<0ºC
Molecular Formula	C₁₄H₁₉NO
Molecular Weight	217.307
Flash Point	137.8±17.3 °C
Exact Mass	217.146667
PSA	21.26000
LogP	3.93
Vapour Pressure	0.0±0.7 mmHg at 25°C
Index of Refraction	1.512
InChIKey	DECIPOUIJURFOJ-UHFFFAOYSA-N
SMILES	CCOc1ccc2c(c1)C(C)=CC(C)(C)N2
Stability	Stable. Combustible. Incompatible with oxidizing agents, strong acids. Polymerizes if heated. May polymerize upon exposure to light and air.
Water Solubility	ethanol: 50 mL/L, clear, brown \| <0.1 g/100 mL at 20 ºC

This table provides MSDS information including hazard classification, first‑aid, fire‑fighting, spill handling, operation and storage instructions.

Ethoxyquin MSDS(Chinese)

This table summarizes toxicological test data, acute & chronic toxicity and ecological hazard parameters for this chemical.

CHEMICAL IDENTIFICATION

RTECS NUMBER :: VB8225000

CHEMICAL NAME :: Quinoline, 6-ethoxy-1,2-dihydro-2,2,4-trimethyl-

CAS REGISTRY NUMBER :: 91-53-2

LAST UPDATED :: 199710

DATA ITEMS CITED :: 17

MOLECULAR FORMULA :: C14-H19-N-O

MOLECULAR WEIGHT :: 217.34

WISWESSER LINE NOTATION :: T66 BM CHJ C1 C1 E1 HO2

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 800 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 1730 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Intraperitoneal

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 200 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Intravenous

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 178 mg/kg

TOXIC EFFECTS :: Behavioral - altered sleep time (including change in righting reflex) Behavioral - convulsions or effect on seizure threshold Behavioral - coma

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 14377 mg/kg/3W-C

TOXIC EFFECTS :: Blood - change in clotting factors

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 63 gm/kg/30W-I

TOXIC EFFECTS :: Kidney, Ureter, Bladder - changes in bladder weight Nutritional and Gross Metabolic - weight loss or decreased weight gain

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 122 gm/kg/58W-C

TOXIC EFFECTS :: Kidney, Ureter, Bladder - other changes

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 12 gm/kg/29W-C

TOXIC EFFECTS :: Liver - changes in liver weight Kidney, Ureter, Bladder - changes in tubules (including acute renal failure, acute tubular necrosis) Kidney, Ureter, Bladder - changes in bladder weight

MUTATION DATA

TEST SYSTEM :: Rodent - rat

DOSE/DURATION :: 13 gm-kg/4W (Continuous)

REFERENCE :: TXAPA9 Toxicology and Applied Pharmacology. (Academic Press, Inc., 1 E. First St., Duluth, MN 55802) V.1- 1959- Volume(issue)/page/year: 99,37,1989 *** U.S. STANDARDS AND REGULATIONS *** EPA FIFRA 1988 PESTICIDE SUBJECT TO REGISTRATION OR RE-REGISTRATION FEREAC Federal Register. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) V.1- 1936- Volume(issue)/page/year: 54,7740,1989 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOHS - National Occupational Hazard Survey (1974) NOHS Hazard Code - 83809 No. of Facilities: 204 (estimated) No. of Industries: 3 No. of Occupations: 13 No. of Employees: 3572 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - 83809 No. of Facilities: 876 (estimated) No. of Industries: 6 No. of Occupations: 14 No. of Employees: 7945 (estimated)

This table covers safety warnings, protective measures, incompatible substances and disposal guidelines for this compound.

Symbol	GHS07
Signal Word	Warning
Hazard Statements	H302
Precautionary Statements	P301 + P312 + P330
Personal Protective Equipment	Eyeshields;Faceshields;full-face respirator (US);Gloves;multi-purpose combination respirator cartridge (US);type ABEK (EN14387) respirator filter
Hazard Codes	Xn:Harmful
Risk Phrases	R22
Safety Phrases	S24
RIDADR	NONH for all modes of transport
WGK Germany	1
RTECS	VB8225000
HS Code	2933499090

This table presents publicly reported synthetic routes, reaction conditions, reactants and product information of the compound.

2-Phenoxyethanamine

CAS#:156-43-4

Acetone

CAS#:67-64-1

~48%

Ethoxyquin

CAS#:91-53-2

Learn More

Literature: Fotie, Jean; Rhodus, Jessica L.; Taha, Hashem A.; Reid, Carolyn S. Heteroatom Chemistry, 2012 , vol. 23, # 6 p. 598 - 604

4-Hydroxy-4-met...

CAS#:123-42-2

2-Phenoxyethanamine

CAS#:156-43-4

Mesityl oxide

CAS#:141-79-7

Ethoxyquin

CAS#:91-53-2

Learn More

Literature: Mutation Research - Genetic Toxicology and Environmental Mutagenesis, , vol. 542, # 1-2 p. 117 - 128

This table lists upstream starting materials and downstream derivative products related to this chemical.

Precursor 3
CAS#:156-43-4 2-Phenoxyethanamine CAS#:67-64-1 Acetone CAS#:123-42-2 4-Hydroxy-4-met...
DownStream 5
CAS#:1502-22-3 2-(1-Cyclohexen... CAS#:16489-90-0 6-ethoxy-1,2,3,... CAS#:7345-50-8 AKOS BBS-00005656 CAS#:825-25-2 Cyclopentanone,...
CAS#:612-50-0 Quinoline,6-eth...

This table shows customs‑related data including HS‑code, tariff and regulatory conditions for import and export.

HS Code	2933499090
Summary	2933499090. other compounds containing in the structure a quinoline or isoquinoline ring-system (whether or not hydrogenated), not further fused. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

This table lists relevant public references with title, journal and publication metadata for this compound.

Modulation of ethoxyquin genotoxicity by free radical scavengers and DNA damage repair in human lymphocytes.

Toxicol. Lett. 193(2) , 194-9, (2010)

N-tert-butyl-alpha-phenylnitrone (PBN) and its new derivative N-(Pyridine-4-ylmethylidene)-2-carboxy-tert-butylamine N-oxide (PBNC) were synthesized and used to modulate ethoxyquin (1,2-dihydro-6-etho...

Effects of a dietary antioxidant blend and vitamin E on fatty acid profile, liver function, and inflammatory response in broiler chickens fed a diet high in oxidants.

Poult. Sci. 93(7) , 1658-66, (2014)

The aim of the current study was to determine the effects of a dietary antioxidant blend and vitamin E on fatty acid profile, inflammatory response, and liver function. Cobb 500 male broilers (n = 1,2...

Effects of a dietary antioxidant blend and vitamin E on growth performance, oxidative status, and meat quality in broiler chickens fed a diet high in oxidants.

Poult. Sci. 93(7) , 1649-57, (2014)

The aim of the study was to determine the effects of a dietary antioxidant blend (AB) and vitamin E on performance, oxidative status, and meat quality. Cobb 500 male broilers (n = 1,200, d 0) were ran...

This table contains target information, in‑vitro & in‑vivo assay data for this compound.

Name: Luminescence-based cell-based primary high throughput screening assay to identify ago...
Source: The Scripps Research Institute Molecular Screening Center
Target: mu-type opioid receptor isoform MOR-1 [Homo sapiens]
External Id: OPRM1-OPRD1_AG_LUMI_1536_1X%ACT PRUN

Name: Cell Viability Profiling of Human Lymphoblast Cell Lines
Source: NCGC
Target: N/A
External Id: HAPV101

Name: Caspase-3/7 Activation Profiling of Human Lymphoblast Cell Lines
Source: NCGC
Target: N/A
External Id: HAPC101

Name: Fluorescence-based cell-based primary high throughput screening assay to identify ago...
Source: The Scripps Research Institute Molecular Screening Center
Target: muscarinic acetylcholine receptor M1 [Homo sapiens]
External Id: CHRM1_AG_FLUO8_1536_1X%ACT PRUN

Name: Cytochrome P450 Family 1 Subfamily A Member 2 (CYP1A2) small molecule antagonists: lu...
Source: 824
External Id: CYP273

Name: Primary Screen Inhibitors of CD40 Signaling in BL2 Cells Measured in Cell-Based Syste...
Source: Broad Institute
Target: N/A
External Id: 7124-01_Inhibitor_SinglePoint_HTS_Activity

Name: Dicer-mediated maturation of pre-microRNA
Source: Center for Chemical Genomics, University of Michigan
Target: N/A
External Id: TargetID_659_CEMA

Name: Fluorescence-based cell-based primary high throughput screening assay to identify pos...
Source: The Scripps Research Institute Molecular Screening Center
Target: muscarinic acetylcholine receptor M1 [Homo sapiens]
External Id: CHRM1_PAM_FLUO8_1536_1X%ACT PRUN

Name: Fluorescence polarization-based biochemical high throughput primary assay to identify...
Source: The Scripps Research Institute Molecular Screening Center
Target: RecName: Full=Sialate O-acetylesterase; AltName: Full=H-Lse; AltName: Full=Sialic acid-specific 9-O-acetylesterase; Flags: Precursor [Homo sapiens]
External Id: SIAE_INH_FP_1536_1X%INH PRUN

Name: p53 small molecule agonists, cell-based qHTS assay: qHTS cell viability counter scree...
Source: 824
Target: N/A
External Id: P53600

Total 362, Current Page 1 of 37

This table collects all English aliases, systematic names and CAS‑related synonyms of the compound.

6-Ethoxy-2,2,4-trimethyl-1,2-dihydroquinoline

EINECS 202-075-7

6-Ethoxy-1,2-dihydro-2,2,4-trimethylquinoline

emq

quinoled

1,2-dihydro-2,2,4-trimethylquinolin-6-yl ethyl ether

UNII-9T1410R4OR

2,2,4-trimethyl-6-ethoxy-1,2-dihydroquinoline

nocracaw

amea100

Santoquin

usafb-24

antageaw

niflex

ETMDQ

1,2-dihydro-6-ethoxy-2,2,4-trimethylQUINOLINE

Santoflex

niflexd

MFCD00023883

Ethoxyquin

This section contains frequently‑asked‑questions about this compound, including basic parameters, properties, storage conditions and corresponding answers.

Q: What are the downstream products of Ethoxyquin?

A: Related downstream products(CAS) of Ethoxyquin: 1502-22-3;16489-90-0;7345-50-8;825-25-2;612-50-0.

Q: What is the molecular formula of Ethoxyquin?

A: Molecular formula of Ethoxyquin is C14H19NO.

Q: What is the LogP of Ethoxyquin?

A: LogP of Ethoxyquin is 3.93.

Q: What is the InChIKey of Ethoxyquin?

A: InChIKey of Ethoxyquin is DECIPOUIJURFOJ-UHFFFAOYSA-N.

Q: What is the SMILES notation of Ethoxyquin?

A: SMILES notation of Ethoxyquin is CCOc1ccc2c(c1)C(C)=CC(C)(C)N2.

Q: What is the polar surface area (PSA) of Ethoxyquin?

A: Polar surface area (PSA) of Ethoxyquin is 21.26000.

Q: What English synonyms does Ethoxyquin have?

A: English synonyms of Ethoxyquin: 6-Ethoxy-2,2,4-trimethyl-1,2-dihydroquinoline, EINECS 202-075-7, 6-Ethoxy-1,2-dihydro-2,2,4-trimethylquinoline, emq, quinoled, 1,2-dihydro-2,2,4-trimethylquinolin-6-yl ethyl ether, UNII-9T1410R4OR, 2,2,4-trimethyl-6-ethoxy-1,2-dihydroquinoline, nocracaw, amea100, Santoquin, usafb-24, antageaw, niflex, ETMDQ, 1,2-dihydro-6-ethoxy-2,2,4-trimethylQUINOLINE, Santoflex, niflexd, MFCD00023883, Ethoxyquin.

Q: How is the water solubility of Ethoxyquin?

A: Water solubility of Ethoxyquin: ethanol: 50 mL/L, clear, brown | <0.1 g/100 mL at 20 ºC.

Q: What are the upstream materials of Ethoxyquin?

A: Related upstream materials(CAS) of Ethoxyquin: 156-43-4;67-64-1;123-42-2.

Q: What is the boiling point of Ethoxyquin?

A: Boiling point of Ethoxyquin is 333.1±42.0 °C at 760 mmHg.

This table lists manufacturers and suppliers of this compound, including vendor names and product supply reference information.

Shanghai Nianxing Industrial Co., Ltd

Dayang Chem (Hangzhou) Co., Ltd.

Henan Tianfu Chemical Co., Ltd.

Zhongshan Xingrui Chemical Co. , Ltd.

The content on this webpage is sourced from various professional data sources. If you have any questions or concerns regarding the content, please feel free to contact service1@chemsrc.com.

Shanghai Nianxing Industrial Co., Ltd
China
Product Name: Ethoxyquin
Price: Check
Purity: 98.0%
Delivery: 10 Day
Contact: Yang
Email: sales@echemcloud.com

Dayang Chem (Hangzhou) Co., Ltd.
China
Product Name: Ethoxyquin
Price: $Inquiry/100g $Inquiry/1kg $Inquiry/100kg $Inquiry/1000kg
Purity: 98.0%
Delivery: Inquiry
Contact: Ms Wang
Email: enquiry@dycnchem.com

Henan Tianfu Chemical Co., Ltd.
China
Product Name: Ethoxyquin
Price: $Inquiry/1kg $Inquiry/25kg $Inquiry/1000kg $Inquiry/10ton
Purity: 99.0%
Delivery: Inquiry
Contact: Anson
Email: info@tianfuchem.com

Zhongshan Xingrui Chemical Co. , Ltd.
China
Product Name: Ethoxyquin
Price: ￥Inquiry/25kg
Purity: 99.0%
Delivery: Inquiry
Contact: Wang Jie
Email: 3096638339@qq.com

Get all suppliers and price by the below link:

Ethoxyquin suppliers

Price: $66/10mM*1mLinDMSO

Reference only. check more Ethoxyquin price

Ethoxyquin

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Ethoxyquin Biological Activity

Chemical & Physical Properties

MSDS

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HEALTH HAZARD DATA

ACUTE TOXICITY DATA

MUTATION DATA

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The content on this webpage is sourced from various professional data sources. If you have any questions or concerns regarding the content, please feel free to contact service1@chemsrc.com.