104265-16-9

Basic information

• Product Name: 4,9b-dimethyl-3,3a,6,6a,9a,9b-hexahydrobenzo[de]chromene-2,9-dione
• CAS NO: 104265-16-9
• Molecular Formula: C₁₄H₁₆O₃
• Molecular Weight: 232.275
• Mol File: 104265-16-9.mol
• Article Data: 1

Chemical Properties

• Boiling Point: 416.7°C at 760 mmHg
• Flash Point: 187.7°C
• Density: 1.184g/cm³
• Vapor Pressure: 3.74E-07mmHg at 25°C
• Refractive Index: 1.543
• CAS DataBase Reference: 4,9b-dimethyl-3,3a,6,6a,9a,9b-hexahydrobenzo[de]chromene-2,9-dione(CAS DataBase Reference)
• NIST Chemistry Reference: 4,9b-dimethyl-3,3a,6,6a,9a,9b-hexahydrobenzo[de]chromene-2,9-dione(104265-16-9)
• EPA Substance Registry System: 4,9b-dimethyl-3,3a,6,6a,9a,9b-hexahydrobenzo[de]chromene-2,9-dione(104265-16-9)

Safety Data

• Hazardous Substances Data: 104265-16-9(Hazardous Substances Data)

Upstream product

• 104199-15-7 ((1R,4aR,8aR)-7-Methoxy-8a-methyl-5,8-dioxo-1,4,4a,5,8,8a-hexahydro-naphthalen-1-yl)-acetic acid 
• 104199-07-7 ((1R,4aS,8aR)-7-Methoxy-8a-methyl-5,8-dioxo-1,4,4a,5,8,8a-hexahydro-naphthalen-1-yl)-acetic acid 
• 104199-17-9 ((1R,4aR,8S,8aR)-8-Hydroxy-7-methoxy-8a-methyl-5-oxo-1,4,4a,5,8,8a-hexahydro-naphthalen-1-yl)-acetic acid 
• 104199-25-9 ((1R,4aS,8S,8aR)-8-Hydroxy-5,8a-dimethyl-7-oxo-1,4,4a,7,8,8a-hexahydro-naphthalen-1-yl)-acetic acid 

Downstream Products

• 104199-02-2 (3aR,6aS,9aR,9bR)-7,9b-Dimethyl-3,3a,6,6a,9a,9b-hexahydro-benzo[de]chromene-2,9-dione 

Relevant articles and documents

Quassinoids. 2. A New Approach to the BCD Ring System

Diels-Alder reaction of 2,6-disubstituted quinones 4 and simple dienes 5 furnished cis adducts 3 in good yields.Basic isomerization provided the trans-decalins 11 which were converted into the lactones 2 which are models of the BCD ring systems of quassin