protopine
/ˈprəʊtəpiːn/Chemistry
noun
A white crystalline alkaloid present in many plants, especially of the families Papaveraceae and Fumariaceae.
- Protopine has a pentacyclic structure. Formula: C20H19NO5..
Origin
Late 19th century; earliest use found in Journal of the Chemical Society. From German Protopin from proto- + op- (in Opium, in which protopine was first found) + -in.
- breathily
- breathiness
- breathing
- breathing apparatus
- breathing room
- breathing space
- breathless
- breathlessly
- breathlessness
- breath mint
- breathtaking
- breathtakingly
- breath test
- breathy
- breccia
- brecciate
- brecciation
- Brecht, Bertolt
- Brechtian
- Breckinridge, John C.
- Brecknockshire
- Breconshire
- bred
- Breda
- bredie