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leghemoglobin I [Supplementary Concept]
from the nitrogen-fixing root nodules of Parasponia rigida & cowpea Vigna unguiculata; amino acid sequence given in first source; RN given refers to (30-L-aspartic acid)
Date introduced: September 9, 1988
(E)-3,5,4'-trimethoxystilbene [Supplementary Concept]
from the leaves of Eugenia rigida; structure in first source
Date introduced: August 9, 2013
(E)-3,4,3',5'-tetramethoxystilbene [Supplementary Concept]
(Z)-3,4,3',5'-tetramethoxystilbene [Supplementary Concept]
3,4-dimethoxycinnamyl 9-O-beta-D-glucopyranoside [Supplementary Concept]
from Juniperus rigida leaves and twigs; structure in first source
Date introduced: June 3, 2013
4'-methylepigallocatechin [Supplementary Concept]
antispasmodic from Maytenus rigida Mart (Celestraceae); structure in first source
Date introduced: January 8, 2013
vallesiachotamine [Supplementary Concept]
antiproliferative, from the leaves of Palicourea rigida (Rubiaceae) collected in the Brazilian Cerrado; structure in first source
Date introduced: July 30, 2012
curcuhydroquinone [Supplementary Concept]
antibacterial from the Caribbean gorgonian Pseudopterogorgia rigida; structure in first source
Date introduced: December 19, 2011
5-bromo-N,N-dimethyltryptamine [Supplementary Concept]
from three Florida sponges, namely, Verongula rigida (order Verongida, family Aplysinidae), Smenospongia aurea, and S. cerebriformis (order Dictyoceratida, family Thorectidae; structure in first source)
Date introduced: April 18, 2008
5,6-dibromo-N,N-dimethyltryptamine [Supplementary Concept]
curcuquinone [Supplementary Concept]
from Caribbean gorgonian sea plume Pseudoterogorgia rigida; structure in first source
Date introduced: May 19, 2005
artocarpol D [Supplementary Concept]
isolated recently from the root bark of Artocarpus rigida; structure in first source
Date introduced: October 18, 2004
artocarpol A [Supplementary Concept]
mochiquinone [Supplementary Concept]
from the Caribbean gorgonian Pseudopterogorgia rigida; structure in first source
Date introduced: March 2, 2001
rigidone [Supplementary Concept]
macrophage scavenger receptor antagonist; isolated from Pseudopterogorgia rigida; structure in first source
Date introduced: May 20, 1997
leghemoglobin II [Supplementary Concept]
from the nitrogen-fixing root nodules of Parasponia rigida & cowpea Vigna unguiculata; amino acid sequence given in first source
Ulva rigida [Supplementary Concept]
Date introduced: July 26, 2023
Umbilicaria rigida [Supplementary Concept]
Date introduced: October 1, 2020
Trechispora rigida [Supplementary Concept]
Didymobotryum rigidum [Supplementary Concept]