109517-68-2

Basic information

• Product Name: crotalarin
• Synonyms: crotalarin
• CAS NO: 109517-68-2
• Molecular Formula: C₂₀H₁₈O₅
• Molecular Weight: 338.35392
• Mol File: 109517-68-2.mol
• Article Data: 1

Chemical Properties

• Boiling Point: 577.2°Cat760mmHg
• Flash Point: 210.8°C
• Appearance: /
• Density: 1.34g/cm³
• Vapor Pressure: 6.39E-14mmHg at 25°C
• Refractive Index: 1.641
• CAS DataBase Reference: crotalarin(CAS DataBase Reference)
• NIST Chemistry Reference: crotalarin(109517-68-2)
• EPA Substance Registry System: crotalarin(109517-68-2)

Safety Data

• Hazardous Substances Data: 109517-68-2(Hazardous Substances Data)

Usage

InChI:InChI=1/C20H18O5/c1-20(2)8-7-13-16(25-20)9-15(22)17-18(23)14(10-24-19(13)17)11-3-5-12(21)6-4-11/h3-6,9-10,21-22H,7-8H2,1-2H3

Upstream product

• 114091-02-0 2-carbethoxy-3(4'-methoxy)phenyl-5-methoxy-8,8-dimethyl-9,10-dihydro-4H,8H-benzo<1,2b:5,6b'>dipyran-4-one 
• 114090-97-0 2-carbethoxy-5-hydroxy-3-(4'-methoxy)phenyl-8,8-dimethyl-6,7-dihydro-4H,8H-benzo<1,2b:5,4b'>dipyran-4-one 
• 114091-03-1 3-(4'-methoxy)phenyl-5-methoxy-8,8-dimethyl-9,10-dihydro-4H,8H-benzo<1,2b:5,6b'>dipyran-4-one-2-carboxylic acid 
• 114091-00-8 5-hydroxy-3-(4'-methoxy)phenyl-8,8-dimethyl-9,10-dihydro-4H,8H-benzo<1,2b:5,6b'>dipyran-4-one-2-carboxylic acid 
• 97185-33-6 3-(4'-methoxy)phenyl-5-methoxy-8,8-dimethyl-9,10-dihydro-4H,8H-benzo<1,2b:5,6b'>dipyran-4-one 
• 57261-40-2 1-(5,7-Dihydroxy-2,2-dimethyl-chroman-6-yl)-2-(4-methoxy-phenyl)-ethanone 
• 5304-65-4 1-(5-hydroxy-7-methoxy-2,2-dimethyl-chroman-6-yl)-2-(4-methoxy-phenyl)-ethanone 
• 114091-01-9 5-hydroxy-3-(4'-methoxy)phenyl-8,8-dimethyl-9,10-dihydro-4H,8H-benzo<1,2b:5,6b'>dipyran-4-one 

Downstream Products

• 76166-59-1 atalantoflavone 

Relevant articles and documents

SYNTHESIS OF ALPINUM ISOFLAVONE, DERRONE AND RELATED PYRANOISOFLAVONES

Reaction of phenacylchroman 1 with ethoxyalyl chloride in pyridine followed by hydrolysis of the resulting esters 2 and 3 and decarboxylation of the acids 4 and 5, gave dihydro-4'-O-methyl alpinum isoflavone 6 and 4'-O-methylderrone 7 respectively.Similarly 8 gave 11 which was selectively demethylated to 7.DDQ, dehydrogenation of 6, 7 and 11 gave 14, 15 and 17.Demethylation of 6 and 7 followed by dehydrogenation gave alpinum isoflavone 18 and derrone 19.