Basic information Safety Supplier Related
ChemicalBook >  Product Catalog >  API >  Antipyretic analgesics >  Nonsteroidal Anti-Inflammatory Drugs (NSAIDS) >  Epirizole

Epirizole

Basic information Safety Supplier Related

Epirizole Basic information

Product Name:
Epirizole
Synonyms:
  • mepirizol
  • 2-(5-methoxy-3-methyl-1-pyrazinyl)-4-methoxy-6-methyl-pyrimidine
  • epirizole
  • MEPIRIZOLE
  • 1-(4-Methyl-6-methoxy-2-pyrimidinyl)-3-methyl-5-methoxypyrazole
  • 4-Methoxy-2-(5-methoxy-3-methylpyrazol-1-yl)-6-methylpyrimidine
  • 4-methoxy-2-(5-methoxy-3-methyl-2H-pyrazin-1-yl)-6-methylpyrimidine
  • 1-(4-methoxy-6-methyl-2-pyrimidinyl)-3-methyl-5-methoxypyrazole
CAS:
18694-40-1
MF:
C11H14N4O2
MW:
234.25
EINECS:
242-507-1
Mol File:
18694-40-1.mol
More
Less

Epirizole Chemical Properties

Melting point:
90-92°
Boiling point:
376.57°C (rough estimate)
Density 
1.1972 (rough estimate)
refractive index 
1.6000 (estimate)
storage temp. 
Sealed in dry,2-8°C
solubility 
Chloroform (Slightly), Methanol (Slightly)
pka
0.65±0.50(Predicted)
form 
Solid
color 
White to off-white
CAS DataBase Reference
18694-40-1(CAS DataBase Reference)
More
Less

Safety Information

Hazard Codes 
Xn
Risk Statements 
20/21/22-36/37/38
Safety Statements 
26-36
WGK Germany 
3
RTECS 
UV9290000
Toxicity
LD50 orally in mice: 820 mg/kg (Ogura)

MSDS

More
Less

Epirizole Usage And Synthesis

Originator

Mebron,Daiichi Seiyaku,Japan,1970

Uses

Analgesic; anti-inflammatory.

Uses

Mepirizole induces precocious differentiation of insulin-producing ti-cells in larval zebrafish. Also, it increases the expression of MDR1 mRNA in Caco-2 cells; Non-acidic analgesic.

Definition

ChEBI: Epirizole is an aromatic ether.

Manufacturing Process

A mixture of 16.3 g of 4-methyl-6-methoxy-2-pyrimidinyl-hydrazine,13.7 g of ethyl acetoacetate and 16.3 ml of methanol was refluxed 2 hours on a water bath. After a mixture of 4.7 g of sodium hydroxide, 4.7 ml of water and 27 ml of methanol was added dropwise thereto at about 50°C, the reaction mixture was refluxed for 2 hours more, then methanol was distilled off and the residue was dissolved in 130 ml of water. The solution was adjusted to pH 6 with acetic acid. The precipitate was filtered, washed with water and dried to give 24 g (yield: 95.3%) of crystals, MP 97° to 98°C. Recrystallization from ligroin gave 1-(4'-methyl-6'-methoxy-2'-pyrimidinyl)-3-methyl-3-pyrazoline-5-one, MP 102° to 103°C.
To a solution of 4.76 g of 1-( 4'-methyl-6'-methoxy-2'-pyrimidinyl)-3-methyl- 3-pyrazoline 5-one in 200 ml of ether was added an ether solution containing 6 molar equivalents of diazomethane and the reaction mixture was allowed to stand at room temperature for 20 hours. After distilling off the solvent, the residue was dissolved in 160 ml of water, made alkaline (pH 10) with sodium hydroxide solution and extracted three times with 140 ml of benzene. The extract was washed with a small amount of water, dried over sodium sulfate and evaporated to give a crystalline mass. Recrystallization from isopropylether gave 1-(4'-methyl-6'-methoxy-2'-pyrimidinyl)-3-methyl-5- methoxypyrazole (3.96 g, 84%) as color less prisms, MP 90° to 92°C.

Therapeutic Function

Antiinflammatory, Analgesic, Antipyretic

EpirizoleSupplier

Shanghai T&W Pharmaceutical Co., Ltd.
Tel
+86 21 61551611
Shanghai EFE Biological Technology Co., Ltd.
Tel
021-65675885 18964387627
Email
info@efebio.com
Chengdu Dianchun Technology Co., Ltd
Tel
400-1166-196 18502815961
Email
cdhxsj@163.com
Amadis Chemical Company Limited
Tel
571-89925085
Email
sales@amadischem.com
Wellman Pharmaceutical Group Limited
Tel
027-83778875 15807197853
Email
15807197853@163.com