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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 740 qualified manufacturers and 369 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.
4829 Active Pharmaceutical Ingredients items

1,3-Diazaspiro[4.4]non-1-en-4-one, 2-butyl-, hydrochloride (1:1)

CAS No: 151257-01-1

Formula: C11H18N2O.ClH

Categories: Active Pharmaceutical Ingredients > Cardiovascular Agents

OilMore

Propafenone

CAS No: 54063-53-5

Formula: C21H27NO3

Categories: Active Pharmaceutical Ingredients > Circulatory System Drugs

ChEBI: An aromatic ketone that is 3-(propylamino)propane-1,2-diol in which the hydrogen of the primary hydroxy group is replaced by a 2-(3-phenylpropanoyl)phenyl group. It is a class 1C antiarrhythmic drug with local anesthetic effects, and is used as the hydroch oride salt in the management of supraventricular and ventricular arrhythmias.More

Cinchonine

CAS No: 118-10-5

Formula: C19H22N2O

Categories: Active Pharmaceutical Ingredients > Antiparasitic Drugs

white to light yellow crystal powdeChEBI: Cinchonan in which a hydrogen at position 9 is substituted by hydroxy (S configuration). It occurs in the bark of most varieties of Cinchona shrubs, and is frequently used for directing chirality in asymmetric synthesis.More

Anagrelide

CAS No: 68475-42-3

Formula: C10H7Cl2N3O

Categories: Active Pharmaceutical Ingredients > Blood System Drugs

ChEBI: A 1,5-dihydroimidazo[2,1-]quinazoline having an oxo substituent at the 2-position and chloro substituents at the 6- and 7-positions.More

Darunavir

CAS No: 206361-99-1

Formula: C27H37N3O7S

Categories: Active Pharmaceutical Ingredients > Antibiotics

Darunavir(TMC114) is an HIV protease inhibitor.IC50 Value: Target: HIV ProteaseDarunavir HIV-1 antiviral structurally is similar to amprenavir and it is second generation HIV-1-protease inhibitor. Darunavir is a drug used to treat HIV infection. It is in the protease inhibitor class. Prezista is an OARAC recommended treatment option for treatment-naive and treatment-experienced adults and adolescents. 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

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Sulfaguanidine

CAS No: 57-67-0

Formula: C7H10N4O2S

Categories: Active Pharmaceutical Ingredients > Amides

It appears as needle-like crystalline powder with the melting point being 190-193 ℃. 1g of this product can be dissolved in about 1000 ml of water at 25 ℃, dissolved in about 10 ml of water at 100 ℃. It is slightly soluble in ethanol or acetone and easily soluble in dilute hydrochloric acid. It is odorless and tasteless with its color deepened in the case of light. white powderMore

Epinastine hydrochloride

CAS No: 108929-04-0

Formula: C16H15N3.ClH

Categories: Active Pharmaceutical Ingredients > Antiallergic Drugs

White Crystalline SolidMore

Nalidixic acid

CAS No: 389-08-2

Formula: C12H12N2O3

Categories: Active Pharmaceutical Ingredients > Synthetic Anti-infective Drugs

Nalidixic acid is a synthetic 1,8-naphthyridine antimicrobial agent with a limited bacteriocidal spectrum.Target: AntibacterialNalidixic acid is the first of the synthetic quinolone antibiotics. Nalidixic acid is effective against both gram-positive and gram-negative bacteria. In lower concentrations, it acts in a bacteriostatic manner; that is, it inhibits growth and reproduction. In higher concentrations, it is bactericidal, meaning that it kills bacteria instead of merely inhibiting tMore

Tioconazole

CAS No: 65899-73-2

Formula: C16H13Cl3N2OS

Categories: Active Pharmaceutical Ingredients > Antimicrobials

Tioconazole is an antifungal medication.Target: AntifungalTioconazole is an antifungal medication of the Imidazole class used to treat infections caused by a fungus or yeast. Tioconazole topical (skin) preparations are also available for ringworm, jock itch, athlete's foot, and tinea versicolor or "sun fungus". Tioconazole interacts with 14-alpha demethylase, a cytochrome P-450 enzyme that converts lanosterol to ergosterol, an essential component of the yeast membrane. In this way, tiocoMore

Prazosin

CAS No: 19216-56-9

Formula: C19H21N5O4

Categories: Active Pharmaceutical Ingredients > Circulatory System Drugs

ChEBI: A member of the class of piperazines that is piperazine substituted by a furan-2-ylcarbonyl group and a 4-amino-6,7-dimethoxyquinazolin-2-yl group at positions 1 and 4 respectively.More

Bromocriptine mesylate

CAS No: 22260-51-1

Formula: C32H40BrN5O5.CH4O3S

Categories: Active Pharmaceutical Ingredients > Nervous System Drugs

Bromocriptine mesylate is a potent dopamine D2/D3 receptor agonist, which binds D2 dopamine receptor with pKi of 8.05±0.2. More

Metoclopramide monohydrochloride monohydrate

CAS No: 54143-57-6

Formula: C14H22ClN3O2.ClH.H2O

Categories: Active Pharmaceutical Ingredients > Digestive System Drugs

Metoclopramide hydrochloride hydrate is a dopamine D2 antagonist that is used as an antiemetic.IC50 Value:Target: D2 ReceptorMetoclopramide is a dopamine receptor antagonist which has been used for treatment of a variety of gastrointestinal symptoms over the last thirty years. In various countries, metoclopramide is the antiemetic drug of choice in pregnant women. Findings provide reassurance regarding the safety of metoclopramide for the fetus when the drug is given to women to relieveMore

Tobramycin sulfate

CAS No: 49842-07-1

Formula: C18H37N5O9.5/2H2O4S

Categories: Active Pharmaceutical Ingredients > Antibiotics

Tobramycin sulfate (Nebramycin Factor 6 sulfate) is a parenterally administered, broad spectrum aminoglycoside antibiotic that is widely used in the treatment of moderate to severe bacterial infections due to sensitive organisms[1]. More

3,4-Dichlorophenylboronic acid

CAS No: 151169-75-4

Formula: C6H5BCl2O2

Categories: Active Pharmaceutical Ingredients > Feed Additive

white to off-white powderMore

Clostilbegit

CAS No: 50-41-9

Formula: C26H28ClNO.C6H8O7

Categories: Active Pharmaceutical Ingredients > Hormones and the Endocrine System

Clomifene Citrate is a selective estrogen receptor modulator.Target: Estrogen Receptor/ERRClomifene Citrate(CC) acted as an estrogen antagonist regardless of the concentration of E2 added together. In conclusion, CC acts as an estrogen agonist/antagonist via ER alpha in a coexisting estrogen concentration-dependent way whereas it acts as an estrogen antagonist via ER beta whether or not estrogen is present [1]. Clomiphene was effective in increasing pregnancy rate compared to placebo (ORMore

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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