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Home > Active Pharmaceutical Ingredients
In the chemical industry, API is Active Pharmaceutical Ingredients, meaning the active ingredients in pharmaceutical products. It is the core substance for producing the intended therapeutic effect. The quality of Active Pharmaceutical Ingredients is critical to the safety and efficacy of the final pharmaceutical product. Therefore, the production of API chemicals involves strict regulatory guidelines and standards, such as GMP (Good Manufacturing Practices) and GLP (Good Laboratory Practices). On ECHEMI, you can select API chemical products on your demand from various active pharmaceutical ingredient manufacturers and distributors.

Active Pharmaceutical Ingredients Suppliers

Buying Active Pharmaceutical Ingredients (APIs) can still be challenging, especially when quality, compliance, and supply stability matter most. On ECHEMI, you can access 743 qualified manufacturers and 374 verified distributors across China, India, the USA, Europe, and other regions. Compare API specifications, review compliance standards, and connect directly with reliable suppliers to support your pharmaceutical production and research needs.
Explore active pharmaceutical ingredients for your specific needs now.
4831 Active Pharmaceutical Ingredients items

1-(4-Hydroxyphenyl)-1-pentanone

CAS No: 2589-71-1

Formula: C11H14O2

Categories: Active Pharmaceutical Ingredients > Other Chemical Drugs

white to light beige powderMore

Gatifloxacin sesquihydrate

CAS No: 180200-66-2

Formula: C19H22FN3O4.3/2H2O

Categories: Active Pharmaceutical Ingredients > Synthetic Anti-infective Drugs

Gatifloxacin sesquihydrate (AM-1155; BMS-206584; PD135432) is a potent fluoroquinolone antibiotic with broad-spectrum antibacterial activity. Gatifloxacin sesquihydrate inhibits bacterial type II topoisomerases (IC50=13.8 μg/ml for S. aureus topoisomerase IV) and E. coli DNA gyrase (IC50 = 0.109 μg/ml)[1]. Gatifloxacin sesquihydrate can be used to treat bacterial conjunctivitis in vivo. More

1,2,3,9-Tetrahydro-4(H)-carbazol-4-one

CAS No: 15128-52-6

Formula: C12H11NO

Categories: Active Pharmaceutical Ingredients > Other Chemical Drugs

Corticosterone

CAS No: 50-22-6

Formula: C21H30O4

Categories: Active Pharmaceutical Ingredients > Antibiotics

Corticosterone is an adrenocortical steroid that has modest but significant activities as a mineralocorticoid and a glucocorticoid. More

Pyritinol hydrochloride

CAS No: 10049-83-9

Formula: C16H20N2O4S2.2ClH

Categories: Active Pharmaceutical Ingredients > Nervous System Drugs

Pyrithioxin dihydrochloride is a neurodynamic compound, combined with a short period of hyperventilation (HV) was applied in cerebral infarct patients with Hemiplegia. More

Thioridazine

CAS No: 50-52-2

Formula: C21H26N2S2

Categories: Active Pharmaceutical Ingredients > Nervous System Drugs

Colorless crystals. Soluble in water and alcohol.More

Sparteine

CAS No: 90-39-1

Formula: C15H26N2

Categories: Active Pharmaceutical Ingredients > Circulatory System Drugs

(-)-Sparteine is a natural alkaloid isolated from beans. More

1117 Active Pharmaceutical Ingredients Suppliers

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Chlorprothixene

CAS No: 113-59-7

Formula: C18H18ClNS

Categories: Active Pharmaceutical Ingredients > Nervous System Drugs

Chlorprothixene has strong binding affinities to dopamine and histamine receptors, such as D1, D2, D3, D5, H1, 5-HT2, 5-HT6 and 5-HT7, with Ki of 18 nM, 2.96 nM, 4.56 nM, 9 nM, 3.75 nM, 9.4 nM, 3 nM and 5.6 nM, respectively.Target: Dopamine ReceptorChlorprothixene exerts strong binding affinities to the dopamine and histamine receptors, such as D1, D2, D3, D5 and H1 with Ki values of 18nM, 2.96 nM, 4.56 nM, 9 nM and 3.75 nM, respectively, but has little affinity to H3 (Ki >1000 nM) [1].More

Nelfinavir

CAS No: 159989-64-7

Formula: C32H45N3O4S

Categories: Active Pharmaceutical Ingredients > Synthetic Anti-infective Drugs

ChEBI: An aryl sulfide that is used (as its mesylate salt) for treatment of HIV and also exhibits some anticancer properties.More

Dibazole

CAS No: 621-72-7

Formula: C14H12N2

Categories: Active Pharmaceutical Ingredients > Circulatory System Drugs

Bendazol is a hypotensive drug which can also enhance NO synthase activity in renal glomeruli and collecting tubules. More

Cefoselis

CAS No: 122841-10-5

Formula: C19H22N8O6S2

Categories: Active Pharmaceutical Ingredients > Antibiotics

Cefoselis is a widely used beta-lactam antibiotic.Target: AntibacterialCefoselis, a new parenteral cephalosporin, was active against clinical isolates of both gram-positive and gram-negative aerobic bacteria. The activity of Cefoselis was similar to that of cefpirome and cefepime and generally superior to that of ceftazidime. Cefoselis showed potent antibacterial activity against Hemophilus influenzae and Moraxella catarrhalis.Cefoselis was highly active against MSSA and MSCNS. CefoselisMore

Droxidopa

CAS No: 23651-95-8

Formula: C9H11NO5

Categories: Active Pharmaceutical Ingredients > Amides

Droxidopa(L-DOPS, SM5688) is a synthetic amino acid precursor which acts as a prodrug to the neurotransmitters norepinephrine (noradrenaline) and epinephrine (adrenaline); capable of crossing the protective blood–brain barrierIC50 value: Target: The acute administration of droxidopa in PVL and BDL rats caused a significant and maintained increase in arterial pressure and mesenteric arterial resistance, with a significant decrease of mesenteric arterial and portal blood flow, without chanMore

Tilorone

CAS No: 27591-97-5

Formula: C25H34N2O3

Categories: Active Pharmaceutical Ingredients > Synthetic Anti-infective Drugs

Mefloquine

CAS No: 53230-10-7

Formula: C17H16F6N2O

Categories: Active Pharmaceutical Ingredients > Antiparasitic Drugs

Off-White SolidMore

Active Pharmaceutical Ingredients Market

Market report will help you efficiently source API chemicals! ECHEMI can provide export and import data of API products you need to monitor and analyze the API market!
  • Phytosterol:

    40.0Yuan/kg -

Frequently Asked Questions

Are APIs safe to store and transport?

APIs must be handled according to regulatory and safety guidelines. Proper storage conditions, protective equipment, and transportation protocols are required to maintain stability and prevent contamination or hazards.

What industries use APIs?

APIs are widely used in pharmaceutical, veterinary, nutraceutical, and chemical research industries. They are essential for manufacturing medications, supplements, and experimental formulations.

How can I buy active pharmaceutical ingredients in bulk?

You can find certified API manufacturers and traders on ECHEMI. They provide detailed product information, CAS numbers, and safety data sheets (SDS) to ensure safe and reliable bulk purchases.

What are the top selling APIs on ECHEMI?

The top selling APIs on ECHEMI include Veterinary Raw Materials, Anesthetic Agents, Antiallergic Drugs, Feed Additives, Hormones and Endocrine Drugs, Digestive System Drugs, Vitamins and Minerals, Synthetic Anti-infective Drugs, Respiratory Drugs, and other chemical drugs.

What are active pharmaceutical ingredients?

Active Pharmaceutical Ingredients, also known as APIs, are the main active ingredients in a pharmaceutical drug to provide the intended therapeutic effect. APIs can be chemically synthesized or obtained from natural sources like plants and animals. After identifying the API, it is combined with other inactive ingredients to create a drug product that can be taken in different forms, such as tablets, capsules or injections.

What are the most common active pharmaceutical ingredients?

Here are some examples of common API chemicals.

1) Paracetamol (Acetaminophen) - a pain reliever and fever reducer

2) Ibuprofen - a nonsteroidal anti-inflammatory drug (NSAID) used to treat pain, fever, and inflammation

3) Aspirin - a medication used to reduce pain, fever, and inflammation and also used as a blood thinner

4) Amoxicillin - an antibiotic used to treat bacterial infections

5) Metformin - an oral medication for type 2 diabetes that lowers blood sugar levels

6) Omeprazole - a proton-pump inhibitor (PPI) used to reduce stomach acid production

7) Atorvastatin - a medication used to lower cholesterol levels in the blood

8) Sertraline - an antidepressant medication belonging to the class of selective serotonin reuptake inhibitors (SSRIs)

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