Epirizole

Modify Date: 2025-08-25 10:34:05

Epirizole structure	Common Name	Epirizole
	CAS Number	18694-40-1	Molecular Weight	234.25400
	Density	1.25g/cm3	Boiling Point	444ºC at 760mmHg
	Molecular Formula	C₁₁H₁₄N₄O₂	Melting Point	90 - 92ºC
	MSDS	Chinese USA	Flash Point	222.3ºC
	Symbol	GHS07	Signal Word	Warning

Use of Epirizole

Epirizole (Mepirizole) is an orally active NSAID (nonsteroidal anti-inflammatory drug). Epirizole shows anti-inflammatory activity, and can be used in chronic rheumatoid arthritis research[1].

Name	4-methoxy-2-(5-methoxy-3-methylpyrazol-1-yl)-6-methylpyrimidine
Synonym	More Synonyms

Description	Epirizole (Mepirizole) is an orally active NSAID (nonsteroidal anti-inflammatory drug). Epirizole shows anti-inflammatory activity, and can be used in chronic rheumatoid arthritis research[1].
Related Catalog	Signaling Pathways >> Others >> Others Research Areas >> Inflammation/Immunology
In Vitro	Epirizole (1-1000 μM; 24 h) increases MDR1 mRNA expression in Caco-2 cells[1]. RT-PCR[1] Cell Line: Caco-2 cells Concentration: 1, 10, 100, and 1000 μM Incubation Time: 24 hours Result: Increased the level of MDR1 mRNA expression.

Density	1.25g/cm3
Boiling Point	444ºC at 760mmHg
Melting Point	90 - 92ºC
Molecular Formula	C₁₁H₁₄N₄O₂
Molecular Weight	234.25400
Flash Point	222.3ºC
Exact Mass	234.11200
PSA	62.06000
LogP	1.29630
Vapour Pressure	0mmHg at 25°C
Index of Refraction	1.601
Storage condition	2-8°C

Epirizole MSDS(Chinese)

CHEMICAL IDENTIFICATION

RTECS NUMBER :: UV9290000

CHEMICAL NAME :: Pyrimidine, 4-methoxy-2-(5-methoxy-3-methyl-1H-pyrazol-1-yl)-6-me thyl-

CAS REGISTRY NUMBER :: 18694-40-1

BEILSTEIN REFERENCE NO. :: 0751084

LAST UPDATED :: 199612

DATA ITEMS CITED :: 9

MOLECULAR FORMULA :: C11-H14-N4-O2

MOLECULAR WEIGHT :: 234.29

WISWESSER LINE NOTATION :: T6N CNJ B- AT5NNJ C1 EO1& DO1 F1

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 :: 445 mg/kg

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

REFERENCE :: JMGZAI Japan Medical Gazette. (Tokyo, Japan) V.1-18(?), 1964-81. Discontinued. Volume(issue)/page/year: 7(9),5,1970

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

ROUTE OF EXPOSURE :: Intraperitoneal

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 214 mg/kg

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

REFERENCE :: JMGZAI Japan Medical Gazette. (Tokyo, Japan) V.1-18(?), 1964-81. Discontinued. Volume(issue)/page/year: 7(9),5,1970

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

ROUTE OF EXPOSURE :: Subcutaneous

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 208 mg/kg

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

REFERENCE :: IYKEDH Iyakuhin Kenkyu. Study of Medical Supplies. (Nippon Koteisho Kyokai, 12-15, 2-chome, Shibuya, Shibuya-ku, Tokyo 150, Japan) V.1- 1970- Volume(issue)/page/year: 8,494,1977

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

ROUTE OF EXPOSURE :: Intravenous

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 214 mg/kg

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

REFERENCE :: 85IRAK "Modern Pharmaceuticals of Japan, V," Tokyo, Japan Pharmaceutical, Medical and Dental Supply Exporters' Assoc., 1975 Volume(issue)/page/year: -,87,1975

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

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 740 mg/kg

TOXIC EFFECTS :: Behavioral - changes in motor activity (specific assay) Behavioral - ataxia Lungs, Thorax, or Respiration - respiratory depression

REFERENCE :: OYYAA2 Oyo Yakuri. Pharmacometrics. (Oyo Yakuri Kenkyukai, CPO Box 180, Sendai 980-91, Japan) V.1- 1967- Volume(issue)/page/year: 16,1011,1978

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

ROUTE OF EXPOSURE :: Intraperitoneal

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 540 mg/kg

TOXIC EFFECTS :: Behavioral - changes in motor activity (specific assay) Behavioral - ataxia Lungs, Thorax, or Respiration - respiratory depression

REFERENCE :: OYYAA2 Oyo Yakuri. Pharmacometrics. (Oyo Yakuri Kenkyukai, CPO Box 180, Sendai 980-91, Japan) V.1- 1967- Volume(issue)/page/year: 16,1011,1978

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

ROUTE OF EXPOSURE :: Subcutaneous

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 550 mg/kg

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

REFERENCE :: IYKEDH Iyakuhin Kenkyu. Study of Medical Supplies. (Nippon Koteisho Kyokai, 12-15, 2-chome, Shibuya, Shibuya-ku, Tokyo 150, Japan) V.1- 1970- Volume(issue)/page/year: 8,494,1977

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

ROUTE OF EXPOSURE :: Intravenous

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 550 mg/kg

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

REFERENCE :: JMGZAI Japan Medical Gazette. (Tokyo, Japan) V.1-18(?), 1964-81. Discontinued. Volume(issue)/page/year: 7(9),5,1970 ** OTHER MULTIPLE DOSE TOXICITY DATA **

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 45500 mg/kg/26W-C

TOXIC EFFECTS :: Gastrointestinal - changes in structure or function of salivary glands Liver - changes in liver weight Endocrine - changes in adrenal weight

REFERENCE :: IYKEDH Iyakuhin Kenkyu. Study of Medical Supplies. (Nippon Koteisho Kyokai, 12-15, 2-chome, Shibuya, Shibuya-ku, Tokyo 150, Japan) V.1- 1970- Volume(issue)/page/year: 8,524,1977

Symbol	GHS07
Signal Word	Warning
Hazard Statements	H302-H312-H315-H319-H332-H335
Precautionary Statements	P261-P280-P305 + P351 + P338
Personal Protective Equipment	dust mask type N95 (US);Eyeshields;Faceshields;Gloves
Hazard Codes	Xn:Harmful;
Risk Phrases	R20/21/22;R36/37/38
Safety Phrases	S26-S36
RIDADR	NONH for all modes of transport
WGK Germany	3
RTECS	UV9290000
HS Code	2933990090

HS Code	2933990090
Summary	2933990090. heterocyclic compounds with nitrogen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

Chemical screen identifies FDA-approved drugs and target pathways that induce precocious pancreatic endocrine differentiation.

Proc. Natl. Acad. Sci. U. S. A. 108(48) , 19264-9, (2011)

Pancreatic β-cells are an essential source of insulin and their destruction because of autoimmunity causes type I diabetes. We conducted a chemical screen to identify compounds that would induce the d...

Role of active oxygen species and lipid peroxidation in mepirizole-induced duodenal ulcers in rats.

Dig. Dis. Sci. 43(8) , 1657-64, (1998)

The role of active oxygen species and lipid peroxidation in the pathogenesis of duodenal ulcers induced by mepirizole was investigated in rats. Oral administration of mepirizole (200 mg/kg) resulted i...

Tobacco cigarette smoke attenuates duodenal ulcer margin hyperemia in the rat. Comparison of IAP clearance and hydrogen gas clearance techniques for measurements of gastrointestinal blood flow.

Dig. Dis. Sci. 40(5) , 1112-7, (1995)

The hyperemia at the duodenal ulcer margin is important for ulcer healing. We studied the effect of tobacco cigarette smoke on the hyperemia at the margin of mepirizole-induced duodenal ulcer. Duodena...

Mebron

Epirizolum [INN-Latin]

Mepirizole

Mepirizol [German]

4-methoxy-2-(5-methoxy-3-methyl-pyrazol-1-yl)-6-methyl-pyrimidine

1-(4-Methyl-6-methoxy-pyrimidin-2-yl)-3-methyl-5-methoxy-pyrazol

DA-398

Methopyrimazole

4-methoxy-2-(5-methoxy-3-methyl-1H-pyrazol-1-yl)-6-methylpyrimidine

Epirizol [INN-Spanish]

EINECS 242-507-1

epirizole

MFCD00057351

1-(4-Methoxy-6-methyl-2-pyrimidinyl)-3-methyl-5-methoxy-pyrazol

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Epirizole

Use of Epirizole

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HEALTH HAZARD 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.