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	A0755
A0550	H0155	H0156
H0448	H0451	H0452
H0453	S0021	S0231
S0230	S0229	T0534

H0450	(-)-Hyoscyamine
A0754	Atropine
A0755	Atropine Methyl Nitrate
A0550	Atropine Sulfate Monohydrate
H0155	Homatropine Hydrobromide
H0156	Homatropine Hydrochloride
H0448	Homatropine Methyl Bromide
H0451	Hyoscyamine Hydrobromide
H0452	Hyoscyamine Hydrochloride
H0453	Hyoscyamine Sulfate Hydrate
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	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
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 Hydrochloride
P0016	Papaverine Hydrochloride
C0433	Tubocurarine Chloride

Quinoline Alkaloids

C1495	C0347	C0348
C0349	C0350	C0351
C0791	F0657	H0752
B1683	B1689	B1684
B1685	Q0006	Q0010
Q0028	Q0030

C1495	(S)-(+)-Camptothecin
C0347	Cinchonidine
C0348	Cinchonidine Dihydrochloride
C0349	Cinchonidine Sulfate
C0350	Cinchonine
C0351	Cinchonine Hydrochloride
C0791	Cinchonine Sulfate Dihydrate
F0657	Fluocinolone Acetonide
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
Q0028	Quinine
Q0030	Quinine Hydrochloride Dihydrate

Pyridine Alkaloids

A0523	L0096	L0097
N0079	N0080	N0081
P0460	T1429

A0523	Arecoline Hydrobromide
L0096	Lobeline Hydrochloride
L0097	Lobeline Sulfate
N0079	Nicotine
N0080	Nicotine Bi-L-(+)-tartrate
N0081	Nicotine Sulfate (40-45% in Water as Nicotine base)
P0460	Piperine
T1429	Trigonelline Hydrochloride

Others

S0461	C1103	M1756
C0293	C2042	C0380
G0293	D0651	P0434
P0399	S0067	T0178
T0179	T0329

S0461	(-)-Sparteine
C1103	1-(3-Chloropropyl)theobromine
M1756	3-Methyl-7-propylxanthine
C0293	8-Chlorotheophylline
C2042	Caffeine
C0380	Colchicine (contains 5% Ethyl Acetate at maximum)
G0293	Galantamine Hydrobromide
D0651	Hordenine Sulfate Dihydrate
P0434	Pilocarpine Hydrochloride
P0399	Pilocarpine Nitrate
S0067	Sparteine Sulfate
T0178	Theobromine
T0179	Theophylline
T0329	Tomatine [for Cholesterol assay]