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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 741 qualified manufacturers and 353 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.
4806 Active Pharmaceutical Ingredients items

Flunarizine

CAS No: 52468-60-7

Formula: C26H26F2N2

Categories: Active Pharmaceutical Ingredients > Circulatory System Drugs

SolidMore

Quinine hydrochloride dihydrate

CAS No: 6119-47-7

Formula: C20H24N2O2.ClH.2H2O

Categories: Active Pharmaceutical Ingredients > Antibiotics

Quinine Hydrochloride Dihydrate is a natural white crystalline alkaloid having antipyretic (fever-reducing), antimalarial, analgesic (painkilling), anti-inflammatory properties and a bitter taste.Target: AntiparasiticQuinine is a natural white crystalline alkaloid having antipyretic (fever-reducing), antimalarial, analgesic (painkilling), and anti-inflammatory properties and a bitter taste. It is a stereoisomer of quinidine, which, unlike quinine, is an antiarrhythmic. Quinine contains tMore

Phenazopyridine

CAS No: 94-78-0

Formula: C11H11N5

Categories: Active Pharmaceutical Ingredients > Urinary System Drugs

Phenazopyridine is a red crystalline compound. Slightly soluble in water.More

Fluocinonide

CAS No: 356-12-7

Formula: C26H32F2O7

Categories: Active Pharmaceutical Ingredients > Hormones and the Endocrine System

Fluocinonide (Vanos) is a potent glucocorticoid steroid used topically as anti-inflammatory agent for the treatment of skin disorders.Target: Glucocorticoid ReceptorFluocinonide is a potent glucocorticoid steroid used topically as an anti-inflammatory agent for the treatment of skin disorders such as eczema and seborrhoeic dermatitis. Fluocinonide ranks as a "high-potency" topical corticosteroid. Minimal amounts should be used for a minimal length of time to avoid the occurrence of adverMore

Decoquinate

CAS No: 18507-89-6

Formula: C24H35NO5

Categories: Active Pharmaceutical Ingredients > Veterinary Raw Materials

Off-White to Pale Yellow SolidDecoquinate is a new type highly-efficienct quinolones anti-coccidiosis for livestock and poultry, commonly known as quinoxetine, decanoquinolate, paclitaxel, to quinolate, benzoquinone. The active compound is white or slightly yellow crystalline powder, rarely soluble in chloroform or ether, insoluble in water or ethanol. It has a unique anti-coccidial activity stronger than Maduramicin, nicarbazine + Ethanamidobenzylate, methyl salicin. Studies have shown that deMore

Hexafluoroacetylacetone

CAS No: 1522-22-1

Formula: C5H2F6O2

Categories: Active Pharmaceutical Ingredients > Other Chemical Drugs

clear colorless to slightly yellow liquidHEXAFLUOROACETYLACETONE acts as a chelating ligand. For example, it can forms metal-chelate complexes with Ca(II), Zn (II), Cu(II), Ni(II), Co(II), Nd(III), Rh(III), Fe(III) and Cr(III), making it be useful in extracting related metal ions. It can also be used as liquid crystal intermediate. More

Acetohydroxamic acid

CAS No: 546-88-3

Formula: C2H5NO2

Categories: Active Pharmaceutical Ingredients > Urinary System Drugs

Acetohydroxamic acid is a potent and irreversible inhibitor of bacterial and plant urease and also used as adjunctive therapy in chronic urinary infection.Target: UreaseAcetohydroxamic acid selectively inhibits arachidonate 5-lipoxygenase and thus has potential use in the treatment of asthma.More

Sodium hypochlorite

CAS No: 7681-52-9

Formula: ClHO.Na

Categories: Active Pharmaceutical Ingredients > Oxidising

Sodium hypochlorite, NaOCl, is an air-unstable,pale green crystalline solid that is soluble in cold water, decomposes in hot water, and has a sweet aroma. It generally is available in one of two strengths. The household liquid bleach contains about 5.25 wt% NaCIO. The commercial product(sometimes called 15% bleach) contains 150g/L available chlorine. This is equivalent to about 13 wt% sodium hypochlorite. Sodium hypochlorite is used as a bleaching agent for paper pulp and textiles, as an oxidizMore

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Etoricoxib

CAS No: 202409-33-4

Formula: C18H15ClN2O2S

Categories: Active Pharmaceutical Ingredients > Antipyretic Analgesics

Etoricoxib is a non steroidal anti-inflammatory agent, acting as a selective and orally active COX-2 inhibitor, with IC50s of 1.1 μM and 116 μM for COX-2 and COX-1 in human whole blood. More

Tedizolid

CAS No: 856866-72-3

Formula: C17H15FN6O3

Categories: Active Pharmaceutical Ingredients > Antibacterials

Tedizolid is a novel oxazolidinone, acting through inhibition of bacterial protein synthesis by binding to 23S ribosomal RNA (rRNA) of the 50S subunit of the ribosome. More

Vidarabine

CAS No: 5536-17-4

Formula: C10H13N5O4

Categories: Active Pharmaceutical Ingredients > Synthetic Anti-infective Drugs

Vidarabine is an antiviral drug which is active against herpes simplex and varicella zoster viruses.Target: DNA/RNA SynthesisVidarabine is a nucleoside antibiotic isolated from Streptomyces antibioticus. It has some antineoplastic properties and has broad spectrum activity against DNA viruses in cell cultures and significant antiviral activity against infections caused by a variety of viruses such as the herpes viruses, the vaccinia VIRUS and varicella zoster virus [1]. More

Sulfaclozine

CAS No: 102-65-8

Formula: C10H9ClN4O2S

Categories: Active Pharmaceutical Ingredients > Antiparasitic Drugs

Sulfaclozine is an efficacious sulphonamide derivative with antibacterial and anticoccidial effects.Target: Antibacterial, AntiparasiticSulfaclozine is an antibiotic commonly used in poultry for the treatment of coccidiosis and various infectious diseases, in broiler chickens. Sulfaclozine is commonly used for the treatment of various poultry diseases (particularly, collibacteriosis, fowl cholera and coccidiosis). More

(+)-Catharanthine

CAS No: 2468-21-5

Formula: C21H24N2O2

Categories: Active Pharmaceutical Ingredients > Antineoplastic Agents

Catharanthine inhibits nicotinic receptor mediated diaphragm contractions with IC50 of 59.6 μM.Target: nAChRCatharanthine evokes a concentration-dependent attenuation of carbachol responses in the rat ileum preparation, producing rightward curve displacements and decreases in maximal agonist responses. The mixture of serpentine, plus ajmalicine and catharanthine reveals a concentration-dependent inhibitory effect of acethylcholinesterase (AchE), with an IC50 at ca. 2.25 μg/Ml [1]. CatharMore

Itopride

CAS No: 122898-67-3

Formula: C20H26N2O4

Categories: Active Pharmaceutical Ingredients > Digestive System Drugs

dyspepsia therapyMore

Clemastine

CAS No: 15686-51-8

Formula: C21H26ClNO

Categories: Active Pharmaceutical Ingredients > Antiallergic Drugs

ChEBI: 2-[(2R)-1-Methylpyrrolidin-2-yl]ethanol in which the hydrogen of the hydroxy group is substituted by a 1-(4-chlorophenyl)-1-phenylethyl group (R configuration). An antihistamine with antimuscarinic and moderate sedative pr perties, it is used as its fumarate salt for the symptomatic relief of allergic conditions such as rhinitis, urticaria, conjunctivitis and in pruritic (severe itching) skin conditions.More

Mitoxantrone hydrochloride

CAS No: 70476-82-3

Formula: C22H28N4O6.2ClH

Categories: Active Pharmaceutical Ingredients > Antineoplastic Agents

Mitoxantrone dihydrochloride is a topoisomerase II inhibitor; also inhibits protein kinase C (PKC) activity with an IC50 of 8.5 μM. 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:

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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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