Some plant compounds contain nitrogen in their molecules and exhibit basic properties. They have been termed Alkaloid collectively, which literally means "something like an alkali". The nitrogen in alkaloids derives from amino acids or ammonia nitrogen. Animal alkaloids are also well known.
Since many alkaloids show significant bioactivity, they are included as major elements in pharmaceutical plants and used as pharmaceutical intermediates. In addition, many of them are optically-active compounds which have chiral carbon atoms, therefore they are utilized as optical resolving agents or asymmetric catalysts.

Tropane Alkaloids

Indole Alkaloids

Isoquinoline Alkaloids

Quinoline Alkaloids

Pyridine Alkaloids

Others

Tropane Alkaloids

H0450	A0754	A0550
H0155	H0156	H0448
H0451	H0452	H0453
E0834	B3401	N0844
S0021	S0231	S0230
S0229	T0534

H0450	(-)-Hyoscyamine
A0754	Atropine
A0550	Atropine Sulfate Monohydrate
H0155	Homatropine Hydrobromide
H0156	Homatropine Hydrochloride
H0448	Homatropine Methyl Bromide
H0451	Hyoscyamine Hydrobromide
H0452	Hyoscyamine Hydrochloride
H0453	Hyoscyamine Sulfate Hydrate
E0834	N-(Ethoxycarbonyl)nortropinone
B3401	N-(tert-Butoxycarbonyl)nortropinone
N0844	Nortropinone Hydrochloride
S0021	Scopolamine Hydrobromide Trihydrate
S0231	Scopolamine Methyl Bromide
S0230	Scopolamine Methyl Nitrate
S0229	Scopolamine N-Oxide Hydrobromide
T0534	Tropine

Indole Alkaloids

B0670	B0946	B0671
B0672	C0001	D1247
D0653	H0001	H0002
P0406	P0407	R0007
S0249	S0257	S0093
S0094	V0061	Y0002

B0670	Brucine Dihydrate
B0946	Brucine Anhydrous
B0671	Brucine Hydrochloride
B0672	Brucine Sulfate Heptahydrate [for Nitrate Analysis]
C0001	Cacotheline Monohydrate
D1247	Dihydroergotamine Tartrate
D0653	Gramine
H0001	Harmine
H0002	Harmine Hydrochloride
P0406	Physostigmine free base
P0407	Physostigmine Salicylate
R0007	Reserpine
S0249	Strychnine
S0257	Strychnine Hydrochloride Hydrate
S0093	Strychnine Nitrate
S0094	Strychnine Sulfate Pentahydrate
V0061	Vincamine
Y0002	Yohimbine Hydrochloride

Isoquinoline Alkaloids

B0450	B0451	E0007
P0016	C0433

B0450	Berberine Chloride Hydrate
B0451	Berberine Sulfate Hydrate
E0007	Emetine Dihydrochloride Hydrate
P0016	Papaverine Hydrochloride
C0433	Tubocurarine Chloride

Quinoline Alkaloids

C1495	I0728	C0347
C0348	C0349	C0350
C0351	C0791	H0752
B1683	B1689	B1684
B1685	Q0006	Q0010
Q0028	Q0030

C1495	(S)-(+)-Camptothecin
I0728	beta-Isocupreidine
C0347	Cinchonidine
C0348	Cinchonidine Dihydrochloride
C0349	Cinchonidine Sulfate
C0350	Cinchonine
C0351	Cinchonine Hydrochloride Hydrate
C0791	Cinchonine Sulfate Dihydrate
H0752	Hydroquinidine Hydrochloride
B1683	N-Benzylcinchonidinium Chloride [Chiral Phase-Transfer Catalyst]
B1689	N-Benzylcinchoninium Chloride [Chiral Phase-Transfer Catalyst]
B1684	N-Benzylquinidinium Chloride [Chiral Phase-Transfer Catalyst]
B1685	N-Benzylquininium Chloride [Chiral Phase-Transfer Catalyst]
Q0006	Quinidine
Q0010	Quinidine Sulfate Dihydrate
Q0028	Quinine
Q0030	Quinine Hydrochloride Dihydrate

Pyridine Alkaloids

A0523	N0079	N0080
N0081	T1429

A0523	Arecoline Hydrobromide
N0079	Nicotine
N0080	Nicotine Bi-L-(+)-tartrate Dihydrate
N0081	Nicotine Sulfate (40-45% in Water as Nicotine base)
T1429	Trigonelline Hydrochloride

Others

C0380

G0293

T0329

C0380	Colchicine (contains 5% Ethyl Acetate at maximum)
G0293	Galantamine Hydrobromide
T0329	Tomatine [for Cholesterol assay]