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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 745 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

Trifluoperazine

CAS No: 117-89-5

Formula: C21H24F3N3S

Categories: Active Pharmaceutical Ingredients > Nervous System Drugs

SolidMore

Flucloxacillin

CAS No: 5250-39-5

Formula: C19H17ClFN3O5S

Categories: Active Pharmaceutical Ingredients > Antibiotics

ChEBI: A penicillin compound having a 6beta-[3-(2-chloro-6-fluorophenyl)-5-methyl-1,2-oxazole-4-carboxamido] side-chain.More

Nomegestrol

CAS No: 58691-88-6

Formula: C21H28O3

Categories: Active Pharmaceutical Ingredients > Hormones and the Endocrine System

Nomegestrol is a potent and orally available progestin, acts as a selective full progesterone receptor agonist, with a Kd of 5.44 nM for rat uterine progesterone receptor, and has moderate antiandrogenic activity and strong antiestrogenic activity. More

Cupric citrate

CAS No: 866-82-0

Formula: C6H8O7.2Cu

Categories: Active Pharmaceutical Ingredients > Specialty Drugs

Used as analytical reagents and preservativesMore

Alvimopan

CAS No: 156053-89-3

Formula: C25H32N2O4

Categories: Active Pharmaceutical Ingredients > Digestive System Drugs

Alvimopan has its chemical name being 2-[[(2S)-2-[[(3R, 4R)-4-(3-hydroxyphenyl)-3, 4-dimethyl-piperidin-1-yl] methyl]-3-phenyl-propionyl] amino] acetic acid dihydrate. It is a highly selective peripheral opioid antagonist which was jointly developed by the British company GlaxoSmithKline (GSK) and the United States Adolor company. In May 2008, it was approved by the US FDA for entering into market for applying to promote the recovering of the gastrointestinal function of patients who have beenMore

Sulfadimethoxine sodium

CAS No: 1037-50-9

Formula: C12H14N4O4S.Na

Categories: Active Pharmaceutical Ingredients > Synthetic Anti-infective Drugs

Sulfonamides are mainly used for sensitive bacterial infections, but also for Toxoplasma gondii and Leukocyte infections.More

Methacycline

CAS No: 914-00-1

Formula: C22H22N2O8

Categories: Active Pharmaceutical Ingredients > Antibiotics

ChEBI: A tetracycline that is the 6-methylene analogue of oxytetracycline, obtained by formal dehydration at position 6.More

1138 Active Pharmaceutical Ingredients Suppliers

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Tolbutamide

CAS No: 64-77-7

Formula: C12H18N2O3S

Categories: Active Pharmaceutical Ingredients > Hormones and the Endocrine System

Tolbutamide is a first generation potassium channel blocker, sulfonylurea oral hypoglycemic drug.Target: Potassium ChannelTolbutamide is an oral antihyperglycemic agent used for the treatment of non-insulin-dependent diabetes mellitus (NIDDM). Tolbutamide act by stimulating β cells of the pancreas to release insulin. Sulfonylureas increase both basal insulin secretion and meal-stimulated insulin release. Tolbutamide belongs to a class of medications called sulfonylureas. Tolbutamide inhiMore

Eprazinone

CAS No: 10402-90-1

Formula: C24H32N2O2

Categories: Active Pharmaceutical Ingredients > Respiratory Drugs

ChEBI: A member of the class of piperazines in which the two amino hydrogens of piperazine are replaced by 2-benzoylpropyl and 2-ethoxy-2-phenylethyl groups.More

Sulfapyridine

CAS No: 144-83-2

Formula: C11H11N3O2S

Categories: Active Pharmaceutical Ingredients > Antibiotics

White to Off-White SolidChEBI: A sulfonamide consisting of pyridine with a 4-aminobenzenesulfonamido group at the 2-position.Odorless or almost odorless white or yellowish-white crystalline powder. Very slightly bitter taste. Aqueous solution is neutral. Sulfapyridine’s plasma half-life is 9 hours.This compound is a white, crystalline, odorless, and tastelesssubstance. It is stable in air but slowly darkens on exposureto light. It is soluble in water (1:3,500), in alcohol(1:440), and in acetoneMore

Thiocolchicoside

CAS No: 602-41-5

Formula: C27H33NO10S

Categories: Active Pharmaceutical Ingredients > Anesthetic Agents

Thiocolchicoside is a competitive γ-aminobutyric acid type A (GABAA) receptor antagonist and glycine receptor agonist in the central nervous system. Thiocolchicoside is a semisynthetic sulfur derivative of colchicoside. Thiocolchicoside is a muscle relaxant and has anti-inflammatory, and analgesic properties[1]. More

Molsidomine

CAS No: 25717-80-0

Formula: C9H14N4O4

Categories: Active Pharmaceutical Ingredients > Circulatory System Drugs

Molsidomine is an orally active, long acting vasodilating drug, metabolized in the liver to the active metabolite linsidomine, which is an unstable compound that releases nitric oxide (NO) upon decay as the actual vasodilating compound. More

Desipramine hydrochloride

CAS No: 58-28-6

Formula: C18H22N2.ClH

Categories: Active Pharmaceutical Ingredients > Nervous System Drugs

Desipramine hydrochloride is an inhibitor of norepinephrine transporter (NET), 5-HT transporter (SERT) and dopamine transporter (DAT) with Kis of 4, 61 and 78,720 nM, respectively. More

Diethyl 1,1-cyclobutanedicarboxylate

CAS No: 3779-29-1

Formula: C10H16O4

Categories: Active Pharmaceutical Ingredients > Other Chemical Drugs

Colourless OilMore

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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