CAS 637-07-0|clofibrate

Introduction：Basic information about CAS 637-07-0|clofibrate, including its chemical name, molecular formula, synonyms, physicochemical properties, and safety information, etc.

Table of Contents

1. Names
2. clofibrate BiologicalActivity
3. Chemical & Physical Properties
4. Toxicological Information
CHEMICAL IDENTIFICATION
HEALTH HAZARD DATA
ACUTE TOXICITY DATA
MUTATION DATA
5. Safety Information
6. Customs
7. Articles72
8. Synonyms

Common Name	clofibrate
CAS Number	637-07-0	Molecular Weight	242.699
Density	1.1±0.1 g/cm3	Boiling Point	274.8±0.0 °C at 760 mmHg
Molecular Formula	C₁₂H₁₅ClO₃	Melting Point	/
MSDS	ChineseUSA	Flash Point	115.1±19.9 °C
Symbol	GHS05, GHS07	Signal Word	Danger

Names

Name	clofibrate
Synonym	More Synonyms

clofibrate BiologicalActivity

Description	Clofibrate is an agonist of PPAR, with EC50s of 50 μM, ∼500 μM for murine PPARα and PPARγ, and 55 μM, ∼500 μM for human PPARα and PPARγ, respectively.
Related Catalog	Research Areas >>Metabolic Disease
Target	PPARα:50 μM (EC50) PPARγ:500 μM (EC50)
In Vitro	Clofibrate is a PPAR agonist, with E50s of 50 μM, ∼500 μM for murine PPARα and PPARγ, and 55 μM, ∼500 μM for human PPARα and PPARγ, respectively[1]. Clofibrate (0.5, 1, 2 mM) increases FABP1 expression in two fatty acid (FA)-treated rat hepatoma cells. Clofibrate lowers ROS levels after early treatment, much more than late treatment in FA-treated cells[2].
In Vivo	Clofibrate (0.5%) up-regulates serum concentrations and hepatic expression of FGF21 in fetuses, with a return to basal levels after Clofibrate administration withdrawal. Clofibrate administration-offspring have significantly higher expression of thermogenic genes (Ucp1, Cidea, Ppara Ppargc1a, Cpt1b) and UCP1 protein levels in response to HFD in inguinal fat, but not in retroperitoneal (combined with perirenal) or epididymal fat[3].
Cell Assay	Cells are seeded at a density of 2.5 × 104 cells/well (for WST-1, intracellular lipid droplet quantification and dichlorofluorescein (DCF) assay, 96-well plates) and 1 × 105 cells/well (for Nile Red Staining, 12-well plates) in MEM/EBSS medium and incubated overnight for adherence. The next day cell culture medium is replaced with freshly prepared medium containing the fatty acid mixture oleate:palmitate (2:1) in presence of 3% fatty-acid-free bovine serum albumin. Cells are treated with 0, 0.5, 1, 2, and 3 mM fatty acid (FA) mixture for 24 and 48 hr at 37°C in a humidified incubator in an atmosphere of 95% air and 5% CO2. Clofibrate is used to increase levels of FABP1 in treated cell cultures. Clofibrate (500 μM) is dissolved in DMSOand later added to the medium (DMSO < 0.1% v/v in final volume). Control cells are incubated with DMSO alone. Four different cell treatments includ 1-day FA treatment, 2-day FA treatment, early clofibrate intervention and late clofibrate intervention[1].
Animal Admin	Female and male C57BL/6JNarl mice are used for breeding. Females with parity from 1 to 5 are used. Pregnant females are fed either a control (C) or experimental (CF) diet from breeding to parturition. The C diet is based on an AIN-93M diet with a slight modification to contain 21 kcal% fat from soybean oil, whereas the CF diet is the C diet with addition of 0.5% clofibrate. Pregnancy is dated by the presence of a vaginal plug (defined as pregnancy day 1). After spontaneous parturition (pregnancy day 19.5 ± 0.5), all littermates are uniformly nursed by dams fed the C diet for 3 wk, with litter sizes adjusted to 8-10, weaned onto a nonpurified standard diet for 4 wk, and then switched to a HFD (51 kcal% fat, butter-based) for 5 wk. In this study, only male offspring are used and 2 groups of offspring are designated, according to their mother's diet (C or CF). All mice are kept in a room maintained at 23 ± 2°C, with a controlled 12-h-light:-dark cycle with ad libitum to feed and drinking water. Body weight and feed intake are recorded weekly[3].
References	[1]. Willson TM, et al. The PPARs: from orphan receptors to drug discovery. J Med Chem. 2000 Feb 24;43(4):527-50. [2]. Chen Y, et al. Clofibrate Attenuates ROS Production by Lipid Overload in Cultured Rat Hepatoma Cells. J Pharm Pharm Sci. 2017;20(0):239-251. [3]. Chen SH, et al. Prenatal PPARα activation by clofibrate increases subcutaneous fat browning in male C57BL/6J mice fed a high-fat diet during adulthood. PLoS One. 2017 Nov 2;12(11):e0187507.

Chemical & Physical Properties

Density	1.1±0.1 g/cm3
Boiling Point	274.8±0.0 °C at 760 mmHg
Molecular Formula	C₁₂H₁₅ClO₃
Molecular Weight	242.699
Flash Point	115.1±19.9 °C
Exact Mass	242.070969
PSA	35.53000
LogP	3.32
Vapour Pressure	0.0±0.5 mmHg at 25°C
Index of Refraction	1.505
InChIKey	KNHUKKLJHYUCFP-UHFFFAOYSA-N
SMILES	CCOC(=O)C(C)(C)Oc1ccc(Cl)cc1

Toxicological Information

CHEMICAL IDENTIFICATION

RTECS NUMBER :: UE9480000

CHEMICAL NAME :: Propionic acid, 2-(p-chlorophenoxy)-2-methyl-, ethyl ester

CAS REGISTRY NUMBER :: 637-07-0

BEILSTEIN REFERENCE NO. :: 1913459

LAST UPDATED :: 199706

DATA ITEMS CITED :: 51

MOLECULAR FORMULA :: C12-H15-Cl-O3

MOLECULAR WEIGHT :: 242.72

WISWESSER LINE NOTATION :: GR DOX1&1&VO2

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Human - man

DOSE/DURATION :: 4232 mg/kg/57W-I

TOXIC EFFECTS :: Behavioral - muscle weakness Behavioral - muscle contraction or spasticity Musculoskeletal - other changes

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Human - man

DOSE/DURATION :: 1071 ug/kg

TOXIC EFFECTS :: Behavioral - tremor

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Human - woman

DOSE/DURATION :: 80 mg/kg/2D-I

TOXIC EFFECTS :: Nutritional and Gross Metabolic - body temperature increase

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Human - man

DOSE/DURATION :: 171 mg/kg/6D-I

TOXIC EFFECTS :: Behavioral - muscle weakness Musculoskeletal - other changes

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

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 940 mg/kg

TOXIC EFFECTS :: Behavioral - convulsions or effect on seizure threshold Behavioral - ataxia Gastrointestinal - hypermotility, diarrhea

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

ROUTE OF EXPOSURE :: Intraperitoneal

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 910 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 :: 1220 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 :: 540 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 :: >500 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 :: Unreported

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 1500 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 - rabbit

DOSE/DURATION :: 1370 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 - guinea pig

DOSE/DURATION :: 1280 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 - hamster

DOSE/DURATION :: 2400 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 - hamster

DOSE/DURATION :: 1260 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 :: Mammal - species unspecified

DOSE/DURATION :: 3 gm/kg

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

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 7 gm/kg/14D-I

TOXIC EFFECTS :: Liver - changes in liver weight Biochemical - Enzyme inhibition, induction, or change in blood or tissue levels - hepatic microsomal mixed oxidase (dealkylation, hydroxylation, etc.) Biochemical - Enzyme inhibition, induction, or change in blood or tissue levels - other transferases

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 3750 mg/kg/30D-C

TOXIC EFFECTS :: Liver - other changes Kidney, Ureter, Bladder - other changes Biochemical - Enzyme inhibition, induction, or change in blood or tissue levels - transaminases

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 14 gm/kg/4W-I

TOXIC EFFECTS :: Liver - changes in liver weight Nutritional and Gross Metabolic - weight loss or decreased weight gain Biochemical - Enzyme inhibition, induction, or change in blood or tissue levels - phosphatases

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 14700 mg/kg/7W-C

TOXIC EFFECTS :: Liver - other changes Nutritional and Gross Metabolic - weight loss or decreased weight gain Biochemical - Enzyme inhibition, induction, or change in blood or tissue levels - catalases

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 1698 mg/kg/6D-C

TOXIC EFFECTS :: Blood - changes in serum composition (e.g. TP, bilirubin, cholesterol) Biochemical - Metabolism (Intermediary) - lipids including transport

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - hamster

DOSE/DURATION :: 7 gm/kg/14D-I

TOXIC EFFECTS :: Liver - other changes Biochemical - Enzyme inhibition, induction, or change in blood or tissue levels - hepatic microsomal mixed oxidase (dealkylation, hydroxylation, etc.) Biochemical - Enzyme inhibition, induction, or change in blood or tissue levels - other transferases

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 100 gm/kg/72W-C

TOXIC EFFECTS :: Tumorigenic - equivocal tumorigenic agent by RTECS criteria Gastrointestinal - tumors Liver - tumors

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Oral

DOSE :: 1050 mg/kg

SEX/DURATION :: female 16-22 day(s) after conception

TOXIC EFFECTS :: Reproductive - Effects on Newborn - growth statistics (e.g.%, reduced weight gain)

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Oral

DOSE :: 14 gm/kg

SEX/DURATION :: female 2 week(s) pre-mating - 3 week(s) post-birth

TOXIC EFFECTS :: Reproductive - Effects on Newborn - biochemical and metabolic

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Oral

DOSE :: 5 gm/kg

SEX/DURATION :: female 6-15 day(s) after conception

TOXIC EFFECTS :: Reproductive - Effects on Embryo or Fetus - fetotoxicity (except death, e.g., stunted fetus)

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Oral

DOSE :: 3960 mg/kg

SEX/DURATION :: male 22 day(s) pre-mating

TOXIC EFFECTS :: Reproductive - Paternal Effects - prostate, seminal vesicle, Cowper's gland, accessory glands

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Subcutaneous

DOSE :: 960 mg/kg

SEX/DURATION :: female 17 day(s) after conception

TOXIC EFFECTS :: Reproductive - Effects on Newborn - biochemical and metabolic

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Parenteral

DOSE :: 1440 mg/kg

SEX/DURATION :: female 14-17 day(s) after conception

TOXIC EFFECTS :: Reproductive - Effects on Embryo or Fetus - other effects to embryo

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Oral

DOSE :: 1300 mg/kg

SEX/DURATION :: female 6-18 day(s) after conception

TOXIC EFFECTS :: Reproductive - Fertility - post-implantation mortality (e.g. dead and/or resorbed implants per total number of implants) Reproductive - Effects on Embryo or Fetus - fetal death

TYPE OF TEST :: DNA damage

TYPE OF TEST :: Unscheduled DNA synthesis

TYPE OF TEST :: Unscheduled DNA synthesis

TYPE OF TEST :: Unscheduled DNA synthesis

TYPE OF TEST :: Cytogenetic analysis

MUTATION DATA

TYPE OF TEST :: Sister chromatid exchange

TEST SYSTEM :: Rodent - hamster Ovary

DOSE/DURATION :: 100 umol/L/1H

REFERENCE :: CRNGDP Carcinogenesis (London). (Oxford Univ. Press, Pinkhill House, Southfield Road, Eynsham, Oxford OX8 1JJ, UK) V.1- 1980- Volume(issue)/page/year: 5,703,1984 *** REVIEWS *** IARC Cancer Review:Animal Limited Evidence IMEMDT IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man. (WHO Publications Centre USA, 49 Sheridan Ave., Albany, NY 12210) V.1- 1972- Volume(issue)/page/year: 24,39,1980 IARC Cancer Review:Animal Limited Evidence IMEMDT IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man. (WHO Publications Centre USA, 49 Sheridan Ave., Albany, NY 12210) V.1- 1972- Volume(issue)/page/year: 66,391,1996 IARC Cancer Review:Human Inadequate Evidence IMEMDT IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man. (WHO Publications Centre USA, 49 Sheridan Ave., Albany, NY 12210) V.1- 1972- Volume(issue)/page/year: 24,39,1980 IARC Cancer Review:Human Inadequate Evidence IMEMDT IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man. (WHO Publications Centre USA, 49 Sheridan Ave., Albany, NY 12210) V.1- 1972- Volume(issue)/page/year: 66,391,1996 IARC Cancer Review:Group 3 IMEMDT IARC Monographs on the Evaluation of Carcinogenic Risk of Chemicals to Man. (WHO Publications Centre USA, 49 Sheridan Ave., Albany, NY 12210) V.1- 1972- Volume(issue)/page/year: 66,391,1996 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOHS - National Occupational Hazard Survey (1974) NOHS Hazard Code - T0426 No. of Facilities: 28 (estimated) No. of Industries: 1 No. of Occupations: 5 No. of Employees: 4648 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - T0426 No. of Facilities: 33 (estimated) No. of Industries: 1 No. of Occupations: 1 No. of Employees: 323 (estimated) No. of Female Employees: 176 (estimated)

Safety Information

Symbol	GHS05, GHS07
Signal Word	Danger
Hazard Statements	H302-H315-H318-H335
Precautionary Statements	P261-P280-P305 + P351 + P338
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;R40
Safety Phrases	S26-S36/37/39-S61-S45-S36/37
RIDADR	UN 3082 9/PG 3
WGK Germany	3
RTECS	UE9480000
HS Code	2918990090

Customs

HS Code	2918990090
Summary	2918990090. other carboxylic acids with additional oxygen function and their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulphonated, nitrated or nitrosated derivatives. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:30.0%

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Synonyms

ethyl 2-[(4-chlorophenyl)oxy]-2-methylpropanoate

MFCD00000615

Ethyl α-(p-chlorophenoxy)isobutyrate

Ethyl p-chlorophenoxyisobutyrate

Ethyl α-(4-chlorophenoxy)isobutyrate

Clofipront

Clofibric Acid, Ethyl Ester

2-(p-chlorophenoxy)isobutyric acid ethyl ester

Ethyl α-(4-chlorophenoxy)-α-methylpropionate

clofibrate

Atromid

Anparton

Clofibrato

Chlorfenisate

Ethyl 2-(4-chlorophenoxy)-2-methylpropanoate

Ethyl α-(p-chlorophenoxy)-α-methylpropionate

Sklerolip

Arterioflexin

Antilipid

Fibralem

ethyl p-chlorophenoxy-isobutyrate

Angiokapsul

Regelan N

EINECS 211-277-4

Isobutyric acid, α-(p-chlorophenoxy)-, ethyl ester

Ethyl 2-(4-chlorophenoxy)isobutyrate

clofibric acid

Ethyl 2-(p-chlorophenoxy)-2-methylpropionate

Atromid-S

Propanoic acid, 2-(4-chlorophenoxy)-2-methyl-, ethyl ester

Regelan

Clofibratum

Ethyl 2-(4-chlorophenoxy)-2-methylpropionate

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