Respiratory Drugs Hormones and the Endocrine System Antipyretic analgesics Antiallergic drugs Antiparasitic drugs Antibiotics Antineoplastic agents Anesthetic Agents Urinary System Drugs Other Chemical drugs Synthetic Anti-infective Drugs Nervous system drugs Fluid, Electrolyte, and Acid-Base Balance Vitamins and Minerals medicines Digestive system drugs Blood System Drugs Circulatory system drugs Diagnostic agents Specialty drugs Drug metabolism Feed Additive Anti-stress drugs Heat-clearing prescription Common vaccine and bacterin Disease-resistant serum Animal Diagnostic Biologicals Drugs Influencing Immune Function Veterinary raw materials Inhibitors
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API

Respiratory Drugs Hormones and the Endocrine System Antipyretic analgesics Antiallergic drugs Antiparasitic drugs Antibiotics Antineoplastic agents Anesthetic Agents Urinary System Drugs Other Chemical drugs Synthetic Anti-infective Drugs Nervous system drugs Fluid, Electrolyte, and Acid-Base Balance Vitamins and Minerals medicines Digestive system drugs Blood System Drugs Circulatory system drugs Diagnostic agents Specialty drugs Drug metabolism Feed Additive Anti-stress drugs Heat-clearing prescription Common vaccine and bacterin Disease-resistant serum Animal Diagnostic Biologicals Drugs Influencing Immune Function Veterinary raw materials Inhibitors
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Active Pharmaceutical Ingredients (API), popularly  speaking, are the raw materials of medicines, only pharmaceutical raw materials are processed into pharmaceutical preparations , can they become medicines available for clinical use, so drugs we usually eat  are  the finished drugs  through processing.

Active Pharmaceutical Ingredients based on its sources can be divided into two major categories ,including  chemical synthetic drugs and natural chemical drugs.

Chemical  synthetic drugs can be divided into organic synthetic drugs and inorganic  synthetic drugs. Inorganic synthetic drugs are inorganic compounds (  very few is element), such as aluminum hydroxide, magnesium trisilicate which are used for the treatment of gastric and duodenal ulcers ; organic synthetic drugs are mainly composed of  drugs made by  basic organic chemical raw materials, through a series of organic chemical reactions  (such as aspirin, chloramphenicol, caffeine, etc.).

Natural chemical drugs ,based on its sources,can be divided into two categories including biochemical drugs and plant chemical drugs. Antibiotics are generally made by the microbial fermentation,  which belongs to the biochemistry category. A variety of semi-synthetic antibiotics occurs in recent years,which are biosynthesis and chemical synthesis combining products.Among active Pharmaceutical Ingredients, the organic synthetic drugs varieties, yields and values have  the largest proportion,which are  the main pillars of the chemical and pharmaceutical industries. The quality of active Pharmaceutical Ingredients  decides whether the formulation is good or bad , so its quality standards are very strict  ,countries in the world have developed national pharmacopoeia standards and strict quality control methods for its widely used active Pharmaceutical ingredients.

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Structure:
Chemical Name:
N-2-(4-bromobenzhydryloxy)ethyldimethylamine
CAS:
118-23-0
MF:
C17H20BrNO
Structure:
Chemical Name:
Carpipramine
CAS:
5942-95-0
MF:
C28H38N4O
Structure:
Chemical Name:
carpipramine dihydrochloride
CAS:
7075-03-8
MF:
C28H38N4O.2ClH.H2O
Structure:
Chemical Name:
NORFLOXACIN HYDROCHLORIDE
MF:
C16H19ClFN3O3
Structure:
Chemical Name:
OLEYLOXYETHYL PHOSPHORYLCHOLINE
CAS:
84601-19-4
MF:
C25H52NO5P
Structure:
Chemical Name:
ERGONOVINE
CAS:
60-79-7
MF:
C19H23N3O2
Structure:
Chemical Name:
ETHOPROPAZINE
CAS:
522-00-9
MF:
C19H24N2S
Structure:
Chemical Name:
PIPERACETAZINE (250 MG)
CAS:
3819-00-9
MF:
C24H30N2O2S
Structure:
Chemical Name:
CARBENICILLIN INDANYL SODIUM
CAS:
26605-69-6
MF:
C26H26N2O6S.Na
Chemical Name:
THYROGLOBULIN, HUMAN
CAS:
9010-34-8
Structure:
Chemical Name:
3,3-BIS(P-HYDROXYPHENYL)OXINDOLE
CAS:
125-13-3
MF:
C20H15NO3
Structure:
Chemical Name:
RORIFONE
MF:
C11H23NO3S
Structure:
Chemical Name:
5-(N,N-HEXAMETHYLENE)-AMILORIDE
CAS:
1428-95-1
MF:
C12H18ClN7O
Structure:
Chemical Name:
AGRIMONINE
MF:
C82H54O52
Structure:
Chemical Name:
PRAZEPAM
CAS:
2955-38-6
MF:
C19H17ClN2O
Chemical Name:
KANAMYCIN MONOSULPHATE
MF:
C18H38N4O15S
Chemical Name:
CLODRONATE
Structure:
Chemical Name:
Fructose sodium diphosphate
MF:
C24H48Na4O31P2
Structure:
Chemical Name:
BENCYNOATE HYDROCHLORIDE
CAS:
162220-36-2
MF:
C22H32ClNO3
Structure:
Chemical Name:
Emorfazone
CAS:
38957-41-4
MF:
C11H17N3O3
Structure:
Chemical Name:
solasulfone
CAS:
133-65-3
MF:
C30H28N2O14S5.4Na
Structure:
Chemical Name:
promolate
CAS:
3615-74-5
MF:
C16H23NO4
Chemical Name:
Fish oil
CAS:
8016-13-5
Chemical Name:
Lumefrantrine
Structure:
Chemical Name:
CAPREOMYCIN
CAS:
11003-38-6
MF:
C50H88N28O15
Structure:
Chemical Name:
BIPERIDEN LACTATE
CAS:
7085-45-2
MF:
C24H35NO4
Structure:
Chemical Name:
Deferoxamine
CAS:
70-51-9
MF:
C25H48N6O8
Structure:
Chemical Name:
PIVMECILLINAM
CAS:
32886-97-8
MF:
C21H33N3O5S
Structure:
Chemical Name:
DIMETHISTERONE
CAS:
79-64-1
MF:
C23H32O2
Structure:
Chemical Name:
BACMECILLINAM
CAS:
50846-45-2
MF:
C20H31N3O6S
Structure:
Chemical Name:
nalorphine hydrobromide
CAS:
1041-90-3
MF:
C19H21NO3.BrH
Structure:
Chemical Name:
Indoramin
CAS:
26844-12-2
MF:
C22H25N3O
Structure:
Chemical Name:
Bitolterol
CAS:
30392-40-6
MF:
C28H31NO5
Structure:
Chemical Name:
Rimiterol
CAS:
32953-89-2
MF:
C12H17NO3
Structure:
Chemical Name:
Barite
CAS:
13462-86-7
MF:
BaO4S
Structure:
Chemical Name:
cinpropazide
CAS:
23887-47-0
MF:
C21H31N3O5
Structure:
Chemical Name:
lifibrate
CAS:
22204-91-7
MF:
C20H21Cl2NO4
Structure:
Chemical Name:
furaprofen
CAS:
67700-30-5
MF:
C17H14O3
Structure:
Chemical Name:
thenalidine
CAS:
86-12-4
MF:
C17H22N2S
Structure:
Chemical Name:
4'-methyl-2-(1-pyrrolidinyl)valerophenone hydrochloride
CAS:
1147-62-2
MF:
C16H24ClNO
Structure:
Chemical Name:
pyricarbate
CAS:
1882-26-4
MF:
C11H15N3O4
Structure:
Chemical Name:
methallenestril
CAS:
517-18-0
MF:
C18H22O3
Structure:
Chemical Name:
furtrethonium iodide
CAS:
541-64-0
MF:
C8H14INO
Structure:
Chemical Name:
stilbazium iodide
CAS:
3784-99-4
MF:
C31H36IN3
Structure:
Chemical Name:
pipamazine
CAS:
84-04-8
MF:
C21H24ClN3OS
Structure:
Chemical Name:
guamecycline
CAS:
16545-11-2
MF:
C29H38N8O8
Chemical Name:
Olibanum
Chemical Name:
CLINDAMYCIN PHOSPHAT
Chemical Name:
Starch oxide
Chemical Name:
Decloxizin HCL CP2000
Chemical Name:
Active Calcium
Chemical Name:
Omeprazole sodium sterile
Chemical Name:
Fursultiamine HCL JP
Chemical Name:
FLURBIPROFEN SODIUM ASSAY STANDARD BP(CRM STANDARD)
Structure:
Chemical Name:
TAUROCHOLIC ACID SODIUM SALT HYDRATE
CAS:
345909-26-4
MF:
C26H46NNaO8S
Structure:
Chemical Name:
Sodium taurocholate
CAS:
145-42-6
MF:
C26H44NNaO7S
Structure:
Chemical Name:
Peramivir
CAS:
229614-55-5
MF:
C15H28N4O4
Chemical Name:
SodiumAcetrizoate
Chemical Name:
Tolmetin
Structure:
Chemical Name:
Mianserin
MF:
C18H20N2
Structure:
Chemical Name:
Flubanilate
CAS:
847-20-1
MF:
C14H19F3N2O2
Structure:
Chemical Name:
Flunoxaprofen
CAS:
66934-18-7
MF:
C16H12FNO3
Structure:
Chemical Name:
Fluretofen
CAS:
56917-29-4
MF:
C14H9F
Structure:
Chemical Name:
Furbenicillin
CAS:
54661-82-4
MF:
C22H22N4O7S
Structure:
Chemical Name:
Quingestrone
CAS:
67-95-8
MF:
C26H38O2
Structure:
Chemical Name:
CARBOLONIUMBROMIDE
CAS:
306-41-2
MF:
C18H40N4O4.2Br
Chemical Name:
HACHIMYCIN
CAS:
1394-02-1
MF:
C58H82N2O17(R1)(R2)
Chemical Name:
HYDROXYDIONESODIUMSUCCINATE
Structure:
Chemical Name:
DIETHYLSTILBESTROL DIPROPIONATE
CAS:
130-80-3
MF:
C24H28O4
Chemical Name:
Formylmerphalan
Structure:
Chemical Name:
Oxamphetamine
MF:
C8H11NO
Chemical Name:
WORMSEED OIL
CAS:
8024-11-1
Chemical Name:
antihaemophilic globulin
Chemical Name:
cerbiogen
Structure:
Chemical Name:
D-PINITOL
CAS:
484-68-4
MF:
C7H14O6