NAFRONYL

NAFRONYL Basic information
Product Name:NAFRONYL
Synonyms:3-NAPHTHALEN-1-YL-2-(TETRAHYDRO-FURAN-2-YLMETHYL)-PROPIONIC ACID 2-DIETHYLAMINO-ETHYL ESTER;Citoxid;Di-Actane;Dusodril;Nafmnyl;Praxilene;2-(Diethylamino)ethyl 3-(1-naphthyl)-2-(tetrahydro-2-furanylmethyl)propanoate;2-(Diethylamino)ethyl ester tetrahydro-alpha-(1-naphthalenylmethyl)-2-furanpropanic acid
CAS:31329-57-4
MF:C24H33NO3
MW:383.53
EINECS:250-572-2
Product Categories:Amines;Aromatics;Heterocycles;Intermediates & Fine Chemicals;Pharmaceuticals
Mol File:31329-57-4.mol
NAFRONYL Structure
NAFRONYL Chemical Properties
Boiling point bp0.5 190°
density d431 1.0465
refractive index nD29 1.5513
storage temp. Refrigerator
solubility Chloroform (Slightly), Ethyl Acetate (Slightly)
form Oil
pka9.21±0.25(Predicted)
color Colourless to Dark Yellow
CAS DataBase Reference31329-57-4(CAS DataBase Reference)
Safety Information
ToxicityLD50 in mice (mg/kg): 365 orally (Bessin)
MSDS Information
NAFRONYL Usage And Synthesis
OriginatorDusodril,Roland,W. Germany,1968
UsesVasodilator.
UsesNafronyl is a selective inhibitor of serotonin receptors. Nafronyl is a vasodilator used in the treatment of intermittent claudication.
DefinitionChEBI: 2-(1-naphthalenylmethyl)-3-(2-oxolanyl)propanoic acid 2-(diethylamino)ethyl ester is a member of naphthalenes.
Manufacturing Process30 grams (0.106 mol) of β-(1-naphthyl)-β'-tetrahydrofuryl isobutyric acid are heated under reflux for 8 1/2 hours in 230 cc of isopropanol with 14 grams (0.103 mol) of β-chloroethyl-N-diethylamine. After evaporation of the isopropanol in vacuo, the syrupy residue is treated with a solution of K2CO3. Extraction with ether is carried out after drying over Na2SO4.
Distillation of the extract yields 28.5 grams of a very viscous yellow liquid with a BP0.95-1.09millibar = 198° to 202°C. The yield is 70.5% (theoretical quantity = 40.5 grams).1.3 grams (0.0103 mol) of dihydrated oxalic acid are dissolved while being made tepid in 8 cc of acetone. The cooled solution has added thereto 4 grams (0.0104 mol) of N-diethylaminoethyl-β-(1-naphthyl)-β'- tetrahydrofuryl isobutyrate, obtained according to the process described above and dissolved in 10 cc of acetone. The solution is brought to boiling point for 15 minutes. After cooling to ambient temperature, it is placed in a refrigerator. Crystallization occurs after 2 hours, the crystals which have formed are separated by centrifuging, and after washing in hexane and drying in vacuo 3.5 grams of white crystals are obtained. After being recrystallized three times, in alcohol and then in a mixture of alcohol and ethyl acetate, the product is analytically pure and has a MP = 110° to 111°C (heating stage).
Brand namePraxilene (Lipha, S.A., France).
Therapeutic FunctionVasodilator
World Health Organization (WHO)Naftidrofuryl is a vasoactive spasmolytic used to treat peripheral vascular disease. It also improves the oxygen utilization in tissues.
alpha-(1-Naphthylmethyl)tetrahydro-2-furanpropionic acid 2-piperidinoe thyl ester oxalate NAFTIDROFURYL HYDROGEN OXALATE MM(CRM STANDARD) NAFTIDROFURYL HYDROGEN OXALATE REFERENCE SPECTRUM EPY(CRM STANDARD) 2-(3-PHENYLPROPYL)TETRAHYDROFURAN NAFTIDROFURYL IMPURITY B2-[(NAPHTALEN-1-YL)METHYL]-3-(TETRAHYDROFURAN-2-YL)PROPANOATE EPY(CRM STANDARD) NAFTIDROFURYL - REFERENCE SPECTRUM NAFTIDROFURYL IMPURITY F NAFTIDROFURYL IMPURITY C3-[(NAPHTALEN-1-YL)-2-[(NAPHTALEN-1-YL)METHYL]PROPANOATE EPY(CRM STANDARD) NAFTIDROFURYL IMPURITY A2-[(NAPHTALEN-1-YL)METHYL]-3-(TETRAHYDROFURAN-2-YL)PROPANOIC ACID EPY(CRM STANDARD) NAFTIDROFURYL OXALATE ASSAY STANDARD BP(CRM STANDARD) NAFRONYL OXALATE SALT,NAFRONYL OXALATE,Nafronyl acid oxalate,Nafronyl oxalate salt ,98%,Nafronyl oxalate salt ,99% NAFTIDROFURYL IMPURITY A 1-(TETRAHYDRO-2-FURYL)-3-(1-NAPHTHYL) PROPANE-2-CARBOXYLIC ACID NAFTIDROFURYL IMPURITY C NAFRONYL NAFTIDROFURYL OXALATE BP STANDARD(CRM STANDARD) NAFTIDROFURYL IMPURITY B NAFTIDROFURYL IMPURITY F2-[(DIETHYLAMINO)ETHYL 2-[(NAPHTHALEN-2-YL)METHYL]-3-(TETRAHYDROFURAN-2-YL)PROPANOATE EPY(CRM STANDARD)

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