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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 390 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.
4840 Active Pharmaceutical Ingredients items

Flunarizine hydrochloride

CAS No: 30484-77-6

Formula: C26H26F2N2.2ClH

Categories: Active Pharmaceutical Ingredients > Circulatory System Drugs

Flunarizine is a selective calcium entry blocker.Target: Calcium ChannelFlunarizine is a drug classified as a calcium channel blocker. Flunarizine is a non-selective calcium entry blocker with other actions including histamine H1 receptor blocking activity. It is effective in the prophylaxis of migraine, occlusive peripheral vascular disease, vertigo of central and peripheral origin, and as an adjuvant in the therapy of epilepsy. It may help to reduce the severity and duration of attacksMore

Quinapril hydrochloride

CAS No: 82586-55-8

Formula: C25H30N2O5.ClH

Categories: Active Pharmaceutical Ingredients > Circulatory System Drugs

Quinapril is a prodrug that belongs to the angiotensin-converting enzyme (ACE) inhibitor class of medications.Target: ACEQuinapril is an angiotensin-converting enzyme inhibitor (ACE inhibitor) used in the treatment of hypertension and congestive heart failure. Quinapril is rapidly de-esterified after absorption to quinaprilat (the active diacid metabolite), a potent angiotensin converting enzyme (ACE) inhibitor. Quinapril is now firmly established as an effective and well tolerated ACE iMore

(±)-Hydroxyzine

CAS No: 68-88-2

Formula: C21H27ClN2O2

Categories: Active Pharmaceutical Ingredients > Nervous System Drugs

Hydroxyzine is a histamine H1-receptor antagonist.Target: Histamine H1-ReceptorHydroxyzine inhibits carbachol (10 μM)-induced serotonin release by 34% at 10 μM, by 25% 1 μM and by 17% 0.1 μM in pretreated bladder slices for 60 min [1]. Hydroxyzine (0.1 mM) treatment inhibits the progression and severity of EAE by 50% and the extent of mast cell degranulation by 70% in Lewis rats with allergic encephalomyelitis (EAE) [2]. Hydroxyzine (500 ?M) significantly increases transport of etoposideMore

Cisapride

CAS No: 81098-60-4

Formula: C23H29ClFN3O4

Categories: Active Pharmaceutical Ingredients > Digestive System Drugs

Cisapride(R 51619) is a nonselective 5-HT4 receptor agonist, it is also a potent hERG potassium channel inhibitor.IC50 Value: 0.14 μM(EC50 for 5-HT4 receptor) [1]; 9.8 μM (Kv4.3) [2]Target: 5-HT4 Receptorin vitro: Cisapride showed higher inhibitory effects on a hERG current, as indicated by its IC50 of 9.4 × 10-9 M [1]. cisapride on cloned Kv4.3 channels stably expressed in Chinese hamster ovary cells were investigated using the whole-cell patch-clamp technique. Cisapride inhibited Kv4.3More

1134 Active Pharmaceutical Ingredients Suppliers

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Proparacaine

CAS No: 499-67-2

Formula: C16H26N2O3

Categories: Active Pharmaceutical Ingredients > Anesthetic Agents

Crystalline SolidMore

Irsogladine

CAS No: 57381-26-7

Formula: C9H7Cl2N5

Categories: Active Pharmaceutical Ingredients > Digestive System Drugs

Irsogladine is a PDE4 inhibitor and muscarinic acetylcholine receptor binder.Target: PDE4; mACHRIrsogladine treatment (300 and 500 mg/kg/day) resulted in a dose-dependent reduction of angiogenesis in wild-type mice by 21 and 45.3% (P < 0.02, P < 0.001), in tPA-deficient mice by 42.6 and 46% (P < 0.001, P < 0.001), and in uPA-deficient mice by 27.2 and 46% (P < 0.05, p < 0.001), respectively. Irsogladine inhibits bFGF-induced angiogenesis in wild-type, tPA-knockout, and uPA-knockout miceMore

Nimustine

CAS No: 42471-28-3

Formula: C9H13ClN6O2

Categories: Active Pharmaceutical Ingredients > Antineoplastic Agents

ChEBI: An organochlorine compound that is urea in which the two hydrogens on one of the amino groups are replaced by nitroso and 2-chloroethyl groups and one hydrogen from the other amino group is replaced by a 4-amino-2-methylpyrimidin-5-ylmethyl] group. An anti eoplastic agent especially effective against malignant brain tumors.More

Dibucaine hydrochloride

CAS No: 61-12-1

Formula: C20H30ClN3O2

Categories: Active Pharmaceutical Ingredients > Anesthetic Agents

Dibucaine Hydrochloride is a local anesthetic of the amide type now generally used for surface anesthesia.Target: Sodium ChannelDibucaine is an amide local anesthetic. Dibucaine reduced the degradation of BSA-gold complex in the reservosomes, which was not caused either by an inhibition of the whole proteolytic activity of the parasite or by a reduction on the expression levels of cruzipain [1].Dibucaine, a quaternary ammonium compound, inhibited SChE to a minimum within 2 min in a reverMore

Cefetamet pivoxil

CAS No: 65243-33-6

Formula: C20H25N5O7S2

Categories: Active Pharmaceutical Ingredients > Antibiotics

Pale Yellow SolidMore

Angiotensin acetate

CAS No: 58-49-1

Formula: C49H69N13O12

Categories: Active Pharmaceutical Ingredients > Circulatory System Drugs

Angiotensin II 5-valine is an agonist of angiotensin receptor. More

Pinitol

CAS No: 484-68-4

Formula: C7H14O6

Categories: Active Pharmaceutical Ingredients > Respiratory Drugs

Miglitol

CAS No: 72432-03-2

Formula: C8H17NO5

Categories: Active Pharmaceutical Ingredients > Hormones and the Endocrine System

Miglitol is an oral anti-diabetic drug that acts by inhibiting the ability of the patient to breakdown complex carbohydrates into glucose.Target: OthersMiglitol is an oral anti-diabetic drug that acts by inhibiting the ability of the patient to breakdown complex carbohydrates into glucose. It is primarily used in diabetes mellitus type 2 for establishing greater glycemic control by preventing the digestion of carbohydrates (such as disaccharides, oligosaccharides, and polysaccharides) inMore

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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