rhodophane
The red pigment in the inner segments of the cones of the retina in animals.

rhodophyll
The compound pigment found in the red algae.

rhodopin
A particular carotenoid.

rhodopinal
A particular carotenoid.

rhodopinol
A particular carotenoid.

rhodopterin
Synonym of pterorhodin.

rhodovibrin
A particular carotenoid.

rhodoxanthin
A xanthophyll pigment found in many plants, and in bird feathers.

ribalinine
The quinoline alkaloid 3-hydroxy-2,2,10-trimethyl-2,3,4,10-tetrahydro-5H-pyrano[2,3-b]quinolin-5-one

ribitol
The sugar alcohol (2R,3s,4S)-pentane-1,2,3,4,5-pentol formed by the reduction of ribose

ribityl
The univalent radical derived from ribitol.

ribityls
plural of ribityl

ribofuranoside
Any glycoside derived from ribofuranose.

ribofuranosides
plural of ribofuranoside

ribofuranosyl
A univalent radical derived from a ribofuranose

ribofuranosyls
plural of ribofuranosyl

riboguanidine
A glycoside of ribose and guanidine

ribolactone
The lactone of ribonic acid

ribonolactone
Any lactone of ribonic acid

ribonolactones
plural of ribonolactone

ribonucleate
A strand of ribonucleic acid.
A compounds formed from the reaction of ribonucleic acid with a base.

ribonucleates
plural of ribonucleate

ribopyranoside
Any glycoside derived from ribopyranose

ribopyranosides
plural of ribopyranoside

ribose
A naturally occurring pentose sugar, which is a component of the nucleosides and nucleotides that constitute the nucleic acid biopolymer, RNA. It is also found in riboflavin.

riboses
plural of ribose

riboside
Any glycoside of ribose

ribosides
plural of riboside

ribosugar
Any sugar derived from ribose or deoxyribose

ribosugars
plural of ribosugar

ribosyl
any univalent radical derived from ribose

ribosyls
plural of ribosyl

ricinelaidate
Any salt or ester of ricinelaidic acid.

ricinelaidates
plural of ricinelaidate

ricinelaidin
The glycerin salt of ricinelaidic acid, obtained as a white crystalline waxy substance by treating castor oil with nitrous acid.

ricinolamide
The amide or ricinoleic acid, C₃₆H₃₅NO₄

ricinolate
Any salt or ester of ricinolic acid.

ricinolates
plural of ricinolate

ricinoleate
Any salt or ester of ricinoleic acid.

ricinoleates
plural of ricinoleate

ricinolein
The glyceride of ricinoleic acid, present in castor oil.

ricinoleine
Archaic form of ricinolein.

ricinoleins
plural of ricinolein

riisein
A particular steroid glycoside.

rilmenidine
The heterocycle N-(dicyclopropylmethyl)-4,5-dihydro-1,3-oxazol-2-amine that is used in the treatment of hypertension

robinin
A flavone glycoside found in the locust Robinia pseudoacacia.

roburite
An explosive formerly used in mining, made from chlorinated dinitrobenzene oxidized by ammonium nitrate.

rochlederite
The resinous part of melanchyme.

rodiasine
A bisbenzylisoquinoline alkaloid first isolated from the South American greenheart tree Chlorocardium rodiei.

roemerine
An aporphine alkaloid with the molecular formula C₁₈H₁₇NO₂.

roemrefidine
An isoquinoline alkaloid.

roentgenate
A salt or derivative of roentgenic acid, similar in structure or composition to a gold salt due to the placement of roentgenium (Rg, element 111) in the periodic table.

rohitukine
A chromane alkaloid C₁₆H₁₉O₅N, found in Dysoxylum species.

rolonies
plural of rolony

rolony
A colony of nucleic acid produced by rolling circle replication

ronifibrate
A fibrate that is a combined ester of clofibric acid and niacin with 1,3-propanediol.

rosavin
A cinnamyl alcohol glycoside found in the plant Rhodiola rosea.

rosavins
plural of rosavin

roseoflavin
A compound, 8-dimethylamino-8-demethyl-D-riboflavin, related to riboflavin

rosmarinate
Any salt or ester of rosmarinic acid.

rosmarinates
plural of rosmarinate

rosmarinine
A pyrrolizidine alkaloid.

rossoliside
A naphthoquinone glycoside present in Drosera rotundifolia

rotane
Any of a class of hydrocarbons consisting of spiro-linked cyclopropane units only, but with a common [n]membered ring in the middle; they are named n-rotanes depending on the size of the inner ring

rotanes
plural of rotane

rotenoid
Any of a class of polycyclic compounds related to rotenone

rotenoids
plural of rotenoid

rotenone
A toxic crystalline substance obtained from the roots of derris and related plants, widely used as an insecticide.

rotenones
plural of rotenone

rotoxamine
The maleic acid salt of the levorotatory isomer of carbinoxamine.

rotundene
A tricyclic hydrocarbon derived from Cyperus rotundus. IUPAC name 1,5,9-trimethyltricyclo[6.2.2.0^(2,6)]dodec-9-ene

roxarsone
the compound 4-hydroxy-3-nitrobenzenearsonic acid once used as an additive in chicken feed

rubbies
plural of rubby

rubby
rubbing alcohol.
A drunkard.

ruberoside
A particular steroid glycoside.

rubiacin
A substance found in madder root, and probably identical with ruberythrinic acid.

rubicene
A particular polycyclic aromatic hydrocarbon

rubijervine
A toxic plant steroid derived from solanidanine

rubixanthin
A monocyclic xanthophyll pigment found in rose hips and elsewhere.

rubixanthone
A particular carotenoid.

rubrene
A polycyclic aromatic hydrocarbon, (5,6,11,12-tetraphenyltetracene), used in chemiluminescence applications.

rubrenes
plural of rubrene

rubropunctamine
A red pigment that is the isoquinoline derivative (9~{a}~{R})-3-hexanoyl-9~{a}-methyl-6-[(~{E})-prop-1-enyl]-7~{H}-furo[3,2-g]isoquinoline-2,9-dione

rubropunctatin
The pigment (R-(E))-9a-methyl-3-(1-oxohexyl)-6-(1-propenyl)-2H-furo(3,2-g)(2)benzopyran-2,9(9aH)-dione present in Monascus

rufol
A phenol derivative of anthracene which on oxidation produces a red dyestuff related to anthraquinone.

ruscin
A particular steroid glycoside.

ruscoponticoside
A particular steroid glycoside.

ruscoside
A particular steroid glycoside.

russelioside
A particular steroid glycoside.

rutate
A salt of rutic acid.

rutates
plural of rutate

ruthenacycle
Any cyclic organometallic compound of ruthenium

ruthenacycles
plural of ruthenacycle

ruthenocene
An organoruthenium compound consisting of a ruthenium ion sandwiched in between two cyclopentadienyl rings.

ruthenocenes
plural of ruthenocene

rutin
A flavonoid, found in many plants, that is a glycoside of quercetin and rutinose.

rutinoside
Any glycoside of rutinose.

rutinosides
plural of rutinoside

rutinosyl
A univalent radical derived from rutinose

rutylene
A liquid hydrocarbon, C₁₀H₁₈, of the acetylene series.

ruvoside
A particular steroid glycoside.

ryanodine
A poisonous alkaloid which occurs in the stems of the tropical American shrub Ryania speciosa (family Flacourtiaceae) and has been used as an insecticide and in experimental studies of calcium release within cells.

ryanodines
plural of ryanodine

sabadine
A crystalline alkaloid which is found in sabadilla seeds

sabinene
A liquid bicyclic unsaturated terpene hydrocarbon which is found usually in savin oil. It is the isomer of thujene containing a double bond outside the rings.

sabinenes
plural of sabinene

sabulite
An explosive containing ammonium nitrate, calcium silicide and trinitrotoluene.

saccaropine
Misspelling of saccharopine.

saccharapine
Misspelling of saccharopine.

saccharate
A salt or ester of saccharic acid.
A metallic derivative of a sugar, usually with a bivalent metal; especially sucrate (not used systematically).

saccharates
plural of saccharate

saccharinate
Any salt or ester of a saccharinic acid.

saccharinates
plural of saccharinate

saccharolactone
The lactone of saccharic acid

saccharonate
Any salt or ester of saccharonic acid.

saccharone
the lactone of saccharonic acid

saccharopine
The amino acid 2-[(5-amino-5-carboxy-pentyl) amino] pentanedioic acid that is an intermediate in the metabolism of lysine.

saccholactate
A salt of saccholactactic acid.

saccholactates
plural of saccholactate

sadiki
homebrew alcohol; moonshine

sadiqi
Alternative form of sadiki.

sadleroside
A particular steroid glycoside.

saflufenacil
A particular pyrimidinedione herbicide