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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 744 qualified manufacturers and 393 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.
4850 Active Pharmaceutical Ingredients items

Oxymatrine

CAS No: 16837-52-8

Formula: C15H24N2O2

Categories: Active Pharmaceutical Ingredients > Synthetic Anti-infective Drugs

Oxymatrine, an alkaloid from the roots of Sophora species, with anti-inflammatory, antifibrosis, and antitumor effects, inhibits the iNOS expression and TGF-β/Smad pathway. More

(-)-Penicillamine

CAS No: 52-67-5

Formula: C5H11NO2S

Categories: Active Pharmaceutical Ingredients > Specialty Drugs

Penicillamine is the most characteristic degradation product of the penicillin antibiotics. It is used as an antirheumatic and as a chelating agent in Wilson's disease.Target: OthersPenicillamine(Cuprimine, Depen) is used as an antirheumatic and as a chelating agent in Wilson's disease and is a chelating agent recommended for the removal of excess copper in patients with Wilson's disease. From in vitro studies which indicate that one atom of copper combines with two molecules of penicillMore

Cefdinir

CAS No: 91832-40-5

Formula: C14H13N5O5S2

Categories: Active Pharmaceutical Ingredients > Antibiotics

Cefdinir (Omnicef) is a semi-synthetic, broad-spectrum antibiotic, which is proved to be effective for common bacterial infections of the ear, sinus, throat, and skin.Target: AntibacterialCefdinir is a third generation oral cephalosporin antibiotic. Cefdinir (Omnicef) is a semi-synthetic, broad-spectrum antibiotic in the third generation of the cephalosporin class, which is proved to be effective for common bacterial infections of the ear, sinus, throat, and skin. It can be used to treatMore

Flutamide

CAS No: 13311-84-7

Formula: C11H11F3N2O3

Categories: Active Pharmaceutical Ingredients > Antineoplastic Agents

Light Yellow SolidFlutamide is a kind of synthetic, non-steroidal antiandrogen which is mainly used for the treatment of prostate cancer. It is a kind of toluidine derivative and a nonsteroidal antiandrogen with a similar structure of bicalutamide and nilutamide. The mechanism of its anti-cancer property is through acting as a selective antagonist of the androgen receptor (AR), preventing androgens such as testosterone and its active metabolite dihydrotestosterone from binding to ARs in the proMore

Glycyrrhizic acid ammonium salt

CAS No: 53956-04-0

Formula: C42H65NO16

Categories: Active Pharmaceutical Ingredients > Flavouring

Monoammonium glycyrrhizinate hydrate has various pharmacological actions such as anti-inflammatory, antiallergic, antigastriculcer, and antihepatitis activities. More

Nizatidine

CAS No: 76963-41-2

Formula: C12H21N5O2S2

Categories: Active Pharmaceutical Ingredients > Digestive System Drugs

Nizatidine is a histamine H2 receptor antagonist with low toxicity that inhibits gastric acid secretion.Target: Histamine H2 ReceptorNizatidine, a selective histamine H2-receptor antagonist, is a potent inhibitor of gastric acid secretion, with IC50 of 0.9 nM. Nizatidine exhibits maximal inhibition of gastric acid in rats within the first hour of drug administration, with EC50 of 1.383 μmol/kg [1]. Nizatidine also reversibly inhibits acetylcholinesterase (AChE), with IC50 of 6.7 μM, andMore

1137 Active Pharmaceutical Ingredients Suppliers

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Coluracetam

CAS No: 135463-81-9

Formula: C19H23N3O3

Categories: Active Pharmaceutical Ingredients > Nervous System Drugs

Coluracetam(MKC-231) is a new choline uptake enhancer.IC50 value:Target:in vitro: MKC-231 (10(-10)-10(-6) moll) significantly increased high affinity choline uptake (HACU) when it was incubated with the hippocampal synaptosomes of ethylcholine mustard aziridinium ion (AF64A) treated rats, but not of normal rats. MKC-231 did not affect the AChE activity, [3H]- quinuclidinyl benzilate binding, and [3H]-pirenzepine binding [1].in vivo: Oral administration of MKC-231 (1-10 mg/kg) significantMore

Racecadotril

CAS No: 81110-73-8

Formula: C21H23NO4S

Categories: Active Pharmaceutical Ingredients > Digestive System Drugs

Racecadotril (acetorphan), a potent enkephalinase inhibitor (IC50= 4.5 uM), protects endogenous enkephalins from degradation. IC50 value: 4.5 uMTarget: EnkephalinaseRacecadotril is a peripherally acting enkephalinase inhibitor with an IC50 of 4.5 uM. Unlike other medications used to treat diarrhea, which reduce intestinal motility, Racecadotril has an antisecretory effect-it reduces the secretion of water and electrolytes into the intestine. A small randomized controlled trial found RaceMore

Nisin

CAS No: 1414-45-5

Formula: C143H230N42O37S7

Categories: Active Pharmaceutical Ingredients > Antimicrobials

Crystals from ethanol. Derived from Streptococcus lactis Lancefield Group N.ChEBI: A type-A lantibiotic containing 34 amino acid residues (including lanthionine (Lan), methyllanthionine (MeLan), didehydroalanine (Dha) and didehydroaminobutyric acid (Dhb)) and five thioether bridges. It is obtained by fermentation of the bacterium L ctococcus lactis and shows particular activity against Clostridium botulinum. It is used in the production of various processed foods to suppress Gram-positive spoMore

Lumefantrine

CAS No: 82186-77-4

Formula: C30H32Cl3NO

Categories: Active Pharmaceutical Ingredients > Antiparasitic Drugs

Lumefantrine is an antimalarial drug, used in combination with Artemether. The artemether-lumefantrine (AL) as the first- and second-line anti-malarial drugs. More

Clomipramine

CAS No: 303-49-1

Formula: C19H23ClN2

Categories: Active Pharmaceutical Ingredients > Nervous System Drugs

ChEBI: A dibenzoazepine that is 10,11-dihydro-5H-dibenzo[b,f]azepine which is substituted by chlorine at position 3 and in which the hydrogen attached to the nitrogen is replaced by a 3-(dimethylamino)propyl group. One of the more sedating tricyclic antidepressan s, it is used as the hydrochloride salt for the treatment of depression as well as obsessive-compulsive disorder and phobias.More

Tigecycline

CAS No: 220620-09-7

Formula: C29H39N5O8

Categories: Active Pharmaceutical Ingredients > Antibiotics

Tigecycline is a first-in-class, broad spectrum antibiotic with activity against antibiotic-resistant organisms.Target: AntibacterialTigecycline is active against a broad range of gram-negative and gram-positive bacterial species including clinically important multidrug-resistant nosocomial and community-acquired bacterial pathogens. Tigecycline has been shown to inhibit the translation elongation step by binding to the ribosome 30S subunit and preventing aminoacylated tRNAs to accommodaMore

(-)-Reserpine

CAS No: 50-55-5

Formula: C33H40N2O9

Categories: Active Pharmaceutical Ingredients > Circulatory System Drugs

Reserpine is an inhibitor of the vesicular monoamine transporter 2 (VMAT2). More

Pyrazinamide

CAS No: 98-96-4

Formula: C5H5N3O

Categories: Active Pharmaceutical Ingredients > Synthetic Anti-infective Drugs

Pyrazinamide is a pyrazine that is used therapeutically as an antitubercular agent.Target: AntibacterialPyrazinamide is a prodrug that stops the growth of Mycobacterium tuberculosis. Pyrazinoic acid was thought to inhibit the enzyme fatty acid synthase (FAS) I, which is required by the bacterium to synthesise fatty acids although this has been discounted. It was also suggested that the accumulation of pyrazinoic acid disrupts membrane potential and interferes with energy production, neceMore

Stavudine

CAS No: 3056-17-5

Formula: C10H12N2O4

Categories: Active Pharmaceutical Ingredients > Saccharides

Stavudine is a nucleoside analog that inhibits reverse transcriptase and has in vitro activity against HIV.Target: HIV RT; NRTIsStavudine is a dideoxynucleoside analog that inhibits reverse transcriptase and has in vitro activity against HIV. Stavudine is an analog of thymidine. It is phosphorylated by cellular kinases into active triphosphate. Stavudine triphosphate inhibits the HIV reverse transcriptase by competing with natural substrate, thymidine triphosphate. It also causes terminaMore

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!
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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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