104199-21-5

Basic information

• Product Name: 9-methoxy-9b-methyl-3,3a,6,6a,9a,9b-hexahydrobenzo[de]chromene-2,7-dione
• Synonyms: Naphtho[1,8-bc]pyran-2,7-dione, 3,3a,6,6a,9a,9b-hexahydro-9-methoxy-9b-methyl-, (3aα,6aβ,9aβ,9bα)- (9CI)
• CAS NO: 104199-21-5
• Molecular Formula: C₁₄H₁₆O₄
• Molecular Weight: 248.2744
• Mol File: 104199-21-5.mol
• Article Data: 1

Chemical Properties

• Boiling Point: 450.8°C at 760 mmHg
• Flash Point: 203.6°C
• Density: 1.25g/cm³
• Vapor Pressure: 2.56E-08mmHg at 25°C
• Refractive Index: 1.557
• CAS DataBase Reference: 9-methoxy-9b-methyl-3,3a,6,6a,9a,9b-hexahydrobenzo[de]chromene-2,7-dione(CAS DataBase Reference)
• NIST Chemistry Reference: 9-methoxy-9b-methyl-3,3a,6,6a,9a,9b-hexahydrobenzo[de]chromene-2,7-dione(104199-21-5)
• EPA Substance Registry System: 9-methoxy-9b-methyl-3,3a,6,6a,9a,9b-hexahydrobenzo[de]chromene-2,7-dione(104199-21-5)

Safety Data

• Hazardous Substances Data: 104199-21-5(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 

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