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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 743 qualified manufacturers and 379 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.
4831 Active Pharmaceutical Ingredients items

Pirarubicin

CAS No: 72496-41-4

Formula: C32H37NO12

Categories: Active Pharmaceutical Ingredients > Antineoplastic Agents

Pirarubicin is an anthracycline antibiotics, acts as a topoisomerase II inhibitor, and is a widely used for treatment of various cancers, in particular, solid tumors. More

Niflumic acid

CAS No: 4394-00-7

Formula: C13H9F3N2O2

Categories: Active Pharmaceutical Ingredients > Antipyretic Analgesics

Niflumic acid, a Ca2+-activated Cl- channel blocker, is an analgesic and anti-inflammatory agent used in the treatment of rheumatoid arthritis.Target: Othersniflumic acid, an inhibitor of calcium-activated chloride currents. Niflumic acid does not block directly calcium channels or activate potassium channels. Niflumic acid selectively reduces a component of noradrenaline- and 5-HT-induced pressor responses by inhibiting a mechanism which leads to the opening of voltage-gated calcium chaMore

Ethyl indole-2-carboxylate

CAS No: 3770-50-1

Formula: C11H11NO2

Categories: Active Pharmaceutical Ingredients > Other Chemical Drugs

white to yellow crystals or crystalline powderMore

Ketorolac

CAS No: 74103-06-3

Formula: C15H13NO3

Categories: Active Pharmaceutical Ingredients > Antipyretic Analgesics

Ketorolac is a non-steroidal anti-inflammatory agent, acting as a nonselective COX inhibitor, with IC50s of 20 nM for COX-1 and 120 nM for COX-2. More

Deoxycorticosterone

CAS No: 64-85-7

Formula: C21H30O3

Categories: Active Pharmaceutical Ingredients > Hormones and the Endocrine System

Deoxycorticosterone is a steroid hormone produced by the adrenal gland that possesses mineralocorticoid activity and acts as an aldosterone precursor. More

1122 Active Pharmaceutical Ingredients Suppliers

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CALCIUM IODIDE

CAS No: 10031-31-9

Formula: CaI2

Categories: Active Pharmaceutical Ingredients > Fluid, Electrolyte, and Acid-base Balance

Geldanamycin

CAS No: 30562-34-6

Formula: C29H40N2O9

Categories: Active Pharmaceutical Ingredients > Antibiotics

Geldanamycin is a Hsp90 inhibitor with antimicrobial activity against many Gram-positive and some Gram-negative bacteria. More

Gemifioxacin

CAS No: 175463-14-6

Formula: C18H20FN5O4

Categories: Active Pharmaceutical Ingredients > Synthetic Anti-infective Drugs

ChEBI: A 1,4-dihydro-1,8-naphthyridine with a carboxy group at the 3-position, an oxo sustituent at the 4-position, a fluoro substituent at the 5-position and a substituted pyrrolin-1-yl group at the 7-position.More

Folinic acid

CAS No: 58-05-9

Formula: C20H23N7O7

Categories: Active Pharmaceutical Ingredients > Vitamins and Minerals Medicines

Folinic acid is an adjuvant used in cancer chemotherapy involving the drug methotrexate.Target: AntifolateFolinic acid is a 5-formyl derivative of tetrahydrofolic acid. It is readily converted to other reduced folic acid derivatives (e.g., tetrahydrofolate), and, thus, has vitamin activity that is equivalent to that of folic acid. Since it does not require the action of dihydrofolate reductase for its conversion, its function as a vitamin is unaffected by inhibition of this enzyme by druMore

2,3,3-Trimethylindolenine

CAS No: 1640-39-7

Formula: C11H13N

Categories: Active Pharmaceutical Ingredients > Other Chemical Drugs

GUANFACINE HCL

CAS No: 29110-48-3

Formula: C9H9Cl2N3O.ClH

Categories: Active Pharmaceutical Ingredients > Circulatory System Drugs

Guanfacine Hcl, an anti-hypertensive agent, is a selective α2A-adrenoceptor agonist with Kd of 31 nM and displays 60-fold selectivity over α2B-adrenoceptors. IC50 Value: 31 nM(Kd)Target: Adrenergic ReceptorGuanfacine is a sympatholytic. It is a selective α2A receptor agonist. These receptors are concentrated heavily in the prefrontal cortex and the locus coeruleus, with the potential to improve attention resulting from interaction with receptors in the former. Guanfacine lowers both systMore

Liothyronine sodium

CAS No: 55-06-1

Formula: C15H12I3NO4.Na

Categories: Active Pharmaceutical Ingredients > Hormones and the Endocrine System

3,3',5-Triiodo-L-thyronine sodium is an active form of thyroid hormone, which binds to β1 thyroid hormone receptor (TRβ1), and activates its activity. More

Zileuton

CAS No: 111406-87-2

Formula: C11H12N2O2S

Categories: Active Pharmaceutical Ingredients > Respiratory Drugs

Crystalline SolidChEBI: A member of the class of 1-benzothiophenes that is 1-benzothiophene in which the hydrogen at position 2 is replaced by a 1-[carbamoyl(hydroxy)amino]ethyl group. A selective 5-lipoxygenase inhibitor, it inhibits the formation of leukotrienes LTB4, LTC4, LDT , and LTE4. It is used for the management of chronic asthma.Zileuton, a benzothiophene N-hydroxyurea, is the only approved inhibitor of 5-lipoxygenase. It is believed to intervene with allergic and inflammatory diseasMore

Zafirlukast

CAS No: 107753-78-6

Formula: C31H33N3O6S

Categories: Active Pharmaceutical Ingredients > Antiallergic Drugs

Zafirlukast is a potent orally active leukotriene D4 (LTD4) receptor antagonist.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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