Bacterial Carotenoids. XII. The Constitution of the Minor Carotenoids of Rhodopseudomonas 3. OH-Y.

Abstract
The chemical constitution of OH[long dash]Y from R. gelatinosa was investigated, and the structure as a 7[image], 8[image]-dihydrorhodovibrin (IV) is suggested. The complex carotenoid composition of anaerobic cultures of R. gelatinosa was analyzed, and the components identified.