tylophoroside
A particular steroid glycoside.

tylophoside
A particular steroid glycoside.

tylvalosin
A glycoside of tylosin.

typhasterol
A particular brassinosteroid

tyrindoxyl
A univalent radical derived from Tyrian purple

tyropanoate
Any salt or ester of tyropanoic acid.

tyrosinamide
The acid amide of tyrosine

tyrosinate
Any salt or ester of tyrosine

tyrosinates
plural of tyrosinate

tyrosinyl
The univalent radical derived from tyrosine.

tyrosyl
The univalent radical derived from tyrosine.

tyrosyls
plural of tyrosyl

ubidecarenone
ubiquinone

ubihydroquinone
ubiquinol

ulexine
The alkaloid cytisine when extracted from gorse (of genus Ulex).

ulmate
Any salt of ulmic acid.

ulmates
plural of ulmate

umbelliferyl
A univalent radical derived from umbelliferone

umbelliferyls
plural of umbelliferyl

umbellulone
A monoterpenoid ketone, 4-methyl-1-(propan-2-yl)bicyclo[3.1.0]hex-3-en-2-one, present in the tree Umbellularia californica.

umbrosianin
A diterpenoid isolated from Rabdosia umbrosa.

umeshu
A Japanese liqueur made by steeping unripe ume fruits in alcohol (or saké) and sugar.

undecaacetate
Any compound that has eleven acetate groups (typically of a disaccharide)

undecaacetates
plural of undecaacetate

undecanal
The saturated aliphatic aldehyde having eleven carbon atoms

undecanoate
Any salt or ester of undecanoic acid.

undecanoates
plural of undecanoate

undecanone
Any aliphatic ketone that has eleven carbon atoms

undecanones
plural of undecanone

undecanoyl
The univalent radical derived from undecanoic acid by loss of the hydroxy group

undecanoyls
plural of undecanoyl

undecaoxide
Any oxide having eleven oxygen atoms

undecaoxides
plural of undecaoxide

undecaprenol
An isoprenoid alcohol (having 11 isoprene units) that has a role in peptidoglycan biosynthesis

undecaprenyl
The univalent radical derived from undecaprenol

undecene
Any unsaturated aliphatic hydrocarbon that has eleven carbon atoms and one double bond, but especially 1-undecene

undecenes
plural of undecene

undecenoate
Any salt or ester of undecenoic acid.

undecenoates
plural of undecenoate

undecyl
Any univalent radical derived from an undecane

undecylaldehyde
Synonym of undecanal.

undecylate
Any salt or ester of undecylic acid.

undecylates
plural of undecylate

undecylenate
Any salt or ester of undecylenic acid.

undecylenates
plural of undecylenate

undecyne
Any aliphatic hydrocarbon having a chain of eleven carbon atoms and containing one triple bond.

unithiol
The sodium salt of 2,3-dimercapto-1-propanesulfonic acid; a chelating agent that forms complexes with various heavy metals.

unnilquadium
rutherfordium.

unsaturate
Any unsaturated compound, but especially an unsaturated hydrocarbon in the oil refining industry

unsaturates
plural of unsaturate

uracyl
A univalent radical derived from uracil.

uracyls
plural of uracyl

uranin
An alkaline salt of fluorescein, used as a brownish-red dye.

uranite
A dark, lustrous, heavy mineral, a source of uranium and radium.

uranites
plural of uranite

uranyl
The divalent radical UO₂²⁺, conveniently regarded as a residue of many uranium compounds.

uranyls
plural of uranyl

urate
Any salt of uric acid.

urates
plural of urate

uraturia
The presence of uric acid in the urine

urea
A water-soluble organic compound, CO(NH₂)₂, formed by the metabolism of proteins and excreted in the urine.
Any N-substituted derivative of urea, with the general formula (R₁R₂N)CO(NR₃R₄).

ureas
plural of urea

urechitoxin
A poisonous glucoside found accompanying urechitin.

ureide
Any compound, of general formula R-CO-NH-CO-NH₂ or R-CO-NH-CO-NH-CO-R', formally derived by the acylation of urea.

ureides
plural of ureide

urezin
A particular steroid glycoside.

urginin
A particular steroid glycoside.

uricacidaemia
Alternative form of uricacidemia.

uricacidemia
The presence of uric acid in the bloodstream.

uricaciduria
The presence of uric acid in the urine.

uricaemia
Alternative form of uricemia.

uricemia
The presence of uric acid in the blood

uricosuria
The presence of uric acid in the urine.

uridinyl
A univalent radical derived from uridine.
A uridinyl group.

uridinyls
plural of uridinyl

uridyl
A univalent radical derived from the ribose part of uridine by loss of a hydroxyl group

uridylyl
The univalent radical derived from uridylic acid

urocanate
Any salt or ester of urocanic acid.

urocanates
plural of urocanate

urochrome
A pigment that causes the yellow color in urine. It is a breakdown product of the blood's haemoglobin and is removed by the kidneys.

urochromes
plural of urochrome

urocyanin
A blue pigment sometimes observed in the urine in certain diseases, especially scarlet fever.

uroerythrin
A red pigment (chromophore) associated with the brickdust deposit.

urofuscin
A red-brown pigment sometimes found in urine samples, especially in cases of porphyrinuria.

urofuscohaematin
Alternative form of urofuscohematin.

urofuscohematin
A red pigment derived from hematin, occurring in the urine.

urohaematoporphyrin
Alternative form of urohematoporphyrin.

uronate
Any salt or ester of a uronic acid.

uronates
plural of uronate

uronium
The univalent cation formed by protonating the oxygen atom of urea.

uroniums
plural of uronium

uronyl
A univalent radical derived from a uronic acid

urospectrin
A pigment found in the urine, possibly the same as urohematoporphyrin.

urotropin
hexamine

urotropine
hexamine

uroxanate
Any salt of uroxanic acid.

uroxanates
plural of uroxanate

uroxanthin
The yellow pigment in urine.

urrhodin
Indigo red, a product of the decomposition or oxidation of indican, sometimes found in the sediment of pathological urines.

ursodeoxycholate
Any salt or ester of ursodeoxycholic acid.

ursodeoxycholates
plural of ursodeoxycholate

ursolate
Any salt or ester of ursolic acid.

ursolates
plural of ursolate

usaramine
A pyrrolizidine alkaloid.

uscharidin
A particular steroid glycoside.

uscharin
A particular steroid glycoside.

uttronin
A particular steroid glycoside.

uttroside
A particular steroid glycoside.

uzarin
A particular cardenolide glycoside.

uzaroside
A particular steroid glycoside.

vaccenate
Any salt of ester of vaccenic acid

vaccenates
plural of vaccenate

vaccenyl
The univalent radical, octadec-11-enyl, found in compounds related to vaccenic acid.

vakhmatine
A diterpenoid alkaloid found in Consolida ajacis (syn. Delphinium ajacis).

valenciachrome
A pigment found in various citrus fruits.

valenciachromes
plural of valenciachrome

valeral
valeraldehyde

valeraldehyde
The aliphatic aldehyde, having five carbon atoms, related to valeric acid

valeramide
The amide of valeric acid.

valeramides
plural of valeramide

valeranone
The sesquiterpenoid ketone (4aR,7S,8aS)-4a,8a-dimethyl-7-propan-2-yl-3,4,5,6,7,8-hexahydro-2H-naphthalen-1-one present in the roots of valerian

valerate
Any salt or ester of valeric acid.

valerates
plural of valerate

valerianate
valerate

valeridine
A base, C₁₀H₁₉N, produced by heating valeric aldehyde with ammonia.

valerin
A glyceride of valeric acid, found in butter, dolphin oil, etc.

valerolactone
The lactone of hydroxypentanoic acid

valerone
A ketone, 2,6-dimethyl-4-heptanone, obtained from isovaleric acid

valeronitrile
The nitrile of valeric acid, CH₃(CH₂)₃CN

valerophenone
The ketone 1-phenyl-1-pentanone that is used in photochemistry

valeryl
The univalent radical CH₃(CH₂)₃CO- derived from valeric acid

validoside
A particular steroid glycoside.

vallaroside
A particular steroid glycoside.

vallarosolanoside
A particular steroid glycoside.

vallesiachotamine
A monoterpene indole alkaloid, C₂₁H₂₂N₂O₃.

valyl
The univalent radical derived from valine.

valylene
The organic compound 2-methylbut-1-en-3-yne HC≡C-C(CH₃)=CH₂

valyls
plural of valyl

valzin
The sweetener dulcin.

vanadate
Any salt of vanadic acid.
Any of the corresponding anions, VO₃, VO₄, or V₂O₇.

vanadates
plural of vanadate

vanadia
vanadium pentoxide (V₂O₅)