The 7-OH group of A-ring
of flavanone is important for its antiplatelet activity: Hesperetin hesperidin naringenin and naringin can be regarded as the derivatives originated from same structure core of flavanone (Figure 1).
While the runaway Claire remains in hiding, these and the rest of the novel's character ensemble circle dolefully about, employing and observing Danticat's signature tropes for the undervoiced Haitian people's dire-straits desire to be heard (also, for her own authorial determination to give them voice): radio stations, lighthouses, sign language, butterflies (whose fate is to be immemori ally/memorially both mute and beautiful), and wonns (a Haitian children's singing game similar to the English "Ring a-ring
Ion at m/z 225 was formed from m/z 269 due to the loss of CO2 from the A-ring
for its two hydroxyl groups in the meta position [14, 15].
Various flavonoids possessing isopentenyl side chains in the A-ring
have been prepared and evaluated for their ability to bind estrogen receptor.
These structures were first inferred from Voyager studies of a curious A-ring
property--a viewer sees the ring as slightly brighter toward the left front and right rear and dimmer in between.
observations by spacecraft only found evidence of water-ice particles up to 20 meters across and two much larger, icy moonlets: 30-km-wide Pan and 7-km-wide Daphnis (SN: 11/19/05, p.