18694-40-1

18694-40-1 structure

Name: Epirizole
Chemical Name: 4-methoxy-2-(5-methoxy-3-methylpyrazol-1-yl)-6-methylpyrimidine
CAS Number: 18694-40-1
Molecular Formula: C₁₁H₁₄N₄O₂
Molecular Weight: 234.25400
Catalog: API Antipyretic analgesics Non-steroidal anti-inflammatory drugs
Create Date: 2018-04-01 08:00:00
Modify Date: 2025-08-25 10:34:05
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
Synonyms	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

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

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%

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