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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

(+)-Ethambutol

CAS No: 74-55-5

Formula: C10H24N2O2

Categories: Active Pharmaceutical Ingredients > Amides

Ethambutol is a bacteriostatic antimycobacterial agent, which obstructs the formation of cell wall by inhibiting arabinosyl transferases.Target: AntibacterialEthambutol directly affects two polymers, arabinogalactan (AG) and lipoarabinomannan (LAM) in Mycobacterium smegmatis. In M. smegmatis, Ethambutol inhibits synthesis of arabinan completely and inhibits AG synthesis most likely as a consequence of this; more than 50% of the cell arabinan is released from the bacteria following EthambMore

Atovaquone

CAS No: 95233-18-4

Formula: C22H19ClO3

Categories: Active Pharmaceutical Ingredients > Synthetic Anti-infective Drugs

Atovaquone is a medication used to treat or prevent for pneumocystis pneumonia, toxoplasmosis, malaria, and babesia.Target: AntiparasiticAtovaquone (atavaquone) is a chemical compound that belongs to the class of naphthalenes. Atovaquone is a hydroxy-1,4-naphthoquinone, an analog of ubiquinone, with antipneumocystic activity [1]. Atovaquone is an anti-protozoal mitochondrial electron transport inhibitor; Antimalarial; Antipneumocystic, and has also been used to treat toxoplasmosis. It acMore

Phenyl salicylate

CAS No: 118-55-8

Formula: C13H10O3

Categories: Active Pharmaceutical Ingredients > Perfuming

white crystalline solid with an aromatic odour Phenyl salicylate has a distinctive aromatic odor and taste.ChEBI: A benzoate ester that is the phenyl ester of salicylic acid. Also known as salol, it can be formed by heating salicylic acid with phenol and is used in the manufacture of some polymers, lacquers, adhesives, waxes and polishes.Phenyl salicylate (chemical formula: C13H10O3) belongs to the family of hydroxybenzoic acid which are compound containing a hydroxybenzoic acid or its deriMore

Bismuth subnitrate

CAS No: 1304-85-4

Formula: Bi5H9N4O22

Categories: Active Pharmaceutical Ingredients > Opacifying

White, heavy, Slightly hygroscopic powderBismuth subnitrate, also referred to as bismuth oxynitrate or bismuthyl nitrate, is a highly water-soluble crystalline compound that has been used as a treatment for duodenal ulcers and anti-diarrheic agent. The use of bismuth substrate as an active ingredient in over-the-counter antacids is approved by the FDA.More

Phenytoin sodium

CAS No: 630-93-3

Formula: C15H12N2O2.Na

Categories: Active Pharmaceutical Ingredients > Nervous System Drugs

Phenytoin sodium is an inactive voltage-gated sodium channel stabilizer.Target: Sodium ChannelPhenytoin sodium is an antiepileptic drug. It is useful to treat partial seizures and generalized tonic-clonic seizures but not primary generalized seizures such as absence seizures or myoclonic seizures. Phenytoin is believed to protect against seizures by causing voltage-dependent block of voltage-gated sodium channels [1]. Phenytoin has low affinity for resting sodium channels at hyperpolarizMore

Triethylenetetramine

CAS No: 112-24-3

Formula: C6H18N4

Categories: Active Pharmaceutical Ingredients > Specialty Drugs

Triethylenetetramine is a corrosive liquid.A yellowish liquid. Less dense than water. Combustible, though may be difficult to ignite. Corrosive to metals and tissue. Vapors heavier than air. Toxic oxides of nitrogen produced during combustion. Used in detergents and in the synthesis of dyes, pharmaceuticals and other chemicals.More

Hydroxylapatite (Ca5(OH)(PO4)3)

CAS No: 1306-06-5

Formula: Ca.HO.O4P

Categories: Active Pharmaceutical Ingredients > Skin Conditioning

Tricalcium phosphate is an odorless and tasteless powder that is stable in air. Tribasic calcium phosphate consists of avariable mixture of calcium phosphates having the approximate composition of 10CaO·3P2O5·H2O. white powderThe major constituent of bone and tooth mineral. It is finely divided, crystalline, nonstoichiometric material rich in surface ions (carbonate, magnesium, citrate), which are readily replaced by fluoride ion, thus affording protection to the teeth.Calcium hydroxyapatiteMore

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Diisopropylamine

CAS No: 108-18-9

Formula: C6H15N

Categories: Active Pharmaceutical Ingredients > Buffering

Colorless liquid with an ammonia- or fish-like odor.More

Rifaximin

CAS No: 80621-81-4

Formula: C43H51N3O11

Categories: Active Pharmaceutical Ingredients > Antibiotics

Rifaximin(Xifaxan) is an orally administered, semi-synthetic, nonsystemic antibiotic derived from rifamycin SV with antibacterial activity.IC50 Value:Target: RNA polymerase; antibacterialRifaximin is a semisynthetic, rifamycin-based non-systemic antibiotic, meaning that very little of the drug will pass the gastrointestinal wall into the circulation as is common for other types of orally administered antibiotics. It is used in the treatment of traveler's diarrhea and hepatic encephalopatMore

Travoprost

CAS No: 157283-68-6

Formula: C26H35F3O6

Categories: Active Pharmaceutical Ingredients > Hormones and the Endocrine System

Colorless OilChEBI: The isopropyl ester of prostaglandin F2alpha in which the pentyl group is replaced by a 3-(trifluoromethyl)phenoxymethyl group. A synthetic analogue of prostaglandin F2alpha, ophth lmic solutions of travoprost are used as a topical medication for controlling the progression of open-angle glaucoma and ocular hypertension, by reducing intraocular pressure. It is a pro-drug; the isopropyl ester group is hydrolysed by esterases in the co nea to the biologically active free aciMore

Quinapril

CAS No: 85441-61-8

Formula: C25H30N2O5

Categories: Active Pharmaceutical Ingredients > Circulatory System Drugs

SolidMore

Ciclopirox olamine

CAS No: 41621-49-2

Formula: C12H17NO2.C2H7NO

Categories: Active Pharmaceutical Ingredients > Anti-seborrheic

Ciclopirox olamine is a synthetic antifungal agent for topical dermatologic treatment of superficial mycoses. It is most useful against Tinea versicolor. More

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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