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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 392 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.
4841 Active Pharmaceutical Ingredients items

Polymyxin B

CAS No: 1404-26-8

Categories: Active Pharmaceutical Ingredients > Nervous System Drugs

Salicylamide

CAS No: 65-45-2

Formula: C7H7NO2

Categories: Active Pharmaceutical Ingredients > Keratolytic

Salicylamide is an inhibitor of microsomal UDP-glucuronosyltransferase. Salicylamide is an analgesic and anti-pyretic agent. More

Polymixin B sulfate

CAS No: 1405-20-5

Formula: H2O4S.xUnspecified

Categories: Active Pharmaceutical Ingredients > Antibiotics

White SolidPolymyxin (Aerosporin) was discovered in 1947 almost simultaneouslyin three separate laboratories in the UnitedStates and Great Britain. As often happens whensimilar discoveries are made in widely separated laboratories,differences in nomenclature, referring to both theantibiotic-producing organism and the antibiotic itself, appearedin references to the polymyxins. Because the organismsfirst designated as Bacillus polymyxa and B.aerosporus Greer were found to be identical species, thMore

Fungizone

CAS No: 1397-89-3

Formula: C47H73NO17

Categories: Active Pharmaceutical Ingredients > Antibiotics

Amphotericin B is a polyene antifungal agent against a wide variety of fungal pathogens. It binds irreversibly to ergosterol, resulting in disruption of membrane integrity and ultimately cell death. More

Cyproterone acetate

CAS No: 427-51-0

Formula: C24H29ClO4

Categories: Active Pharmaceutical Ingredients > Hormones and the Endocrine System

Cyproterone acetate is an androgen receptor (AR) antagonist with IC50 of 7.1 nM, as well as a weak progesterone receptor agonist with weak pro-gestational and glucocorticoid activity. Target: Androgen ReceptorCyproterone acetate clearly shows antagonistic properties, while being a partial agonist also, showing agonism for the AR, with EC50 of 4.0 μM, at relatively high concentrations [1]. In the presence of 10 nM Testosterone, low concentrations of Cyproterone acetate inhibits T-stimulatMore

1136 Active Pharmaceutical Ingredients Suppliers

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Etoposide

CAS No: 33419-42-0

Formula: C29H32O13

Categories: Active Pharmaceutical Ingredients > Antineoplastic Agents

Etoposide is a chemotherapy medication used for the treatments of a number of types of cancer. Etoposide inhibits DNA synthesis by forming a complex with topoisomerase II and DNA. More

Ethinyl Estradiol

CAS No: 57-63-6

Formula: C20H24O2

Categories: Active Pharmaceutical Ingredients > Skin Conditioning

Ethynyl estradiol is an orally bio-active estrogen used in almost all modern formulations of combined oral contraceptive pills.Target: Estrogen ReceptorEthinyl estradiol (EE), also sometimes written as ethinylestradiol, ethynyl estradiol, or ethinyl estradiol, is a derivative of 17β-estradiol (E2), the major endogenous estrogen in humans. EE is an orally bioactive estrogen used in many formulations of combined oral contraceptive pills. It is one of the most commonly used medications forMore

Mifepristone

CAS No: 84371-65-3

Formula: C29H35NO2

Categories: Active Pharmaceutical Ingredients > Hormones and the Endocrine System

Mifepristone is a progesterone receptor (PR) and glucocorticoid receptor (GR) antagonist with IC50s of 0.2 nM and 2.6 nM in in vitro assay.More

Nystatin

CAS No: 1400-61-9

Formula:

Categories: Active Pharmaceutical Ingredients > Antibiotics

Brown SolidChEBI: A polyene macrolide antibiotic; part of the nystatin complex produced by several Streptococcus species. The keto-form of nystatin A1.Nystatin (Mycostatin) is a polyene antibiotic that was first isolated in 1951 from a strain of the actinomycete Streptomyces noursei by Hazen and Brown.33 It occurs as a yellow to light tan powder. Nystatin is very slightly soluble in water and sparingly soluble in organic solvents. The compound is unstable to moisture, heat, and light. The aglycMore

Cilostazol

CAS No: 73963-72-1

Formula: C20H27N5O2

Categories: Active Pharmaceutical Ingredients > Blood System Drugs

Cilostazol(OPC 13013; OPC 21) is a potent inhibitor of PDE3A, the isoform of PDE 3 in the cardiovascular system (IC50=0.2 uM).IC50 Value: 0.2 uM [1]Target: PDE3Ain vitro: Cilostazol caused a concentration-dependent increase in the cAMP level in rabbit and human platelets with similar potency. Furthermore, cilostazol and milrinone were equally effective in inhibiting human platelet aggregation with a median inhibitory concentration (IC50) of 0.9 and 2 microM, respectively. In rabbit ventrMore

Diethylstilbestrol

CAS No: 56-53-1

Formula: C18H20O2

Categories: Active Pharmaceutical Ingredients > Hormones and the Endocrine System

Diethylstilbestrol, a synthetic nonsteroidal estrogen used in the treatment of menopausal and postmenopausal disorders.Target: Estrogen Receptor/ERRDiethylstilbestrol (DES), a synthetic estrogen that was used in pregnancy, is a prototype endocrine-disrupting chemical. Although prenatal exposure to DES is known to increase risks of vaginal/cervical adenocarcinoma and adverse reproductive outcomes in women, and urogenital anomalies in men, data on nonreproductive medical conditions are lacMore

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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