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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

Selumetinib

CAS No: 606143-52-6

Formula: C17H15BrClFN4O3

Categories: Active Pharmaceutical Ingredients > Inhibitor Drugs

ChEBI: A member of the class of benzimidazoles that is 1-methyl-1H-benzimidazole which is substituted at positions 4, 5, and 6 by fluorine, (4-bromo-2-chlorophenyl)amino, and N-(2-hydroxyethoxy)aminocarbonyl groups, respectiv ly. It is a MEK1 and MEK2 inhibitor.More

Clemastine fumarate

CAS No: 14976-57-9

Formula: C21H26ClNO.C4H4O4

Categories: Active Pharmaceutical Ingredients > Antiallergic Drugs

Clemastine Fumarate is a selective histamine H1 receptor antagonist with IC50 of 3 nM.Target: Histamine H1 ReceptorClemastine Fumarate inhibits histamine induced rise in [Ca2+]i in HL-60 cells with an IC50 of 3 nM as compared with that of chlorpheniramine or diphenhydramine with IC50 values of 20 nM and 100 nM, respectively [1]. Clemastine showed a first-pass reduction in the extent of absorption, with oral bioavailability calculated as 39.2 +/- 12.4%. Extravascular distribution of drugMore

Buscopan

CAS No: 149-64-4

Formula: C21H30NO4.Br

Categories: Active Pharmaceutical Ingredients > Digestive System Drugs

Scopolamine butylbromide is a competitive antagonist of muscarinic acetylcholine receptor (mAChR) with an IC50 of 55.3 ± 4.3 nM.Target: mAChRScopolamine (USAN), also known as levo-duboisine and hyoscine, sold as Scopoderm, is a tropane alkaloid drug with muscarinic antagonist effects. It is among the secondary metabolites of plants from Solanaceae (nightshade) family of plants, such as henbane, jimson weed (Datura), angel's trumpets (Brugmansia), and corkwood (Duboisia). Scopolamine exerMore

Balofloxacin

CAS No: 127294-70-6

Formula: C20H24FN3O4

Categories: Active Pharmaceutical Ingredients > Synthetic Anti-infective Drugs

Crystalline SolidBalofloxacin, a novel orally-active fluoroquinolone antibiotic, was introduced in South Korea for the treatment of urinary tract infections (UTI). It can be synthetized by reaction of 3-(methylamino)piperidine with the classical 4-quinolone-3-carboxylic acid template. In vitro antibacterial activity of balofloxacin against gram-positive bacteria (Staphylococcus aureus including methicillin-resistant S. aureus, Staphylococcus epidermis, Streptococcus pneumonia, StreptococcuMore

Fluvastatin

CAS No: 93957-54-1

Formula: C24H26FNO4

Categories: Active Pharmaceutical Ingredients > Circulatory System Drugs

Fluvastatin (Leschol) inhibits HMG-CoA reductase activity with IC50 of 8 nM.IC50 value: 8 nMTarget: HMG-CoA reductaseFluvastatin is a competitive inhibitor of hydroxymethylglutaryl-coenzyme A reductase (HMGCR), the enzyme that catalyzes the conversion of HMG-CoA to mevalonic acid, the rate-limiting step in cholesterol biosynthesis. Human hepatocellular carcinoma cell (HCC) studies indicate that Fluvastatin induces G2/M phase arrest. In the presence of Fluvastatin, HCC cells show a decreaMore

Naloxone

CAS No: 465-65-6

Formula: C19H21NO4

Categories: Active Pharmaceutical Ingredients > Specialty Drugs

ChEBI: A synthetic morphinane alkaloid that is morphinone in which the enone double bond has been reduced to a single bond, the hydrogen at position 14 has been replaced by a hydroxy group, and the methyl group attached to the nitrogen has been replaced by an all l group. A specific opioid antagonist, it is used (commonly as its hydrochloride salt) to reverse the effects of opioids, both following their use of opioids during surgery and in cases of known or suspected opioid overdose.More

Phenytoin

CAS No: 57-41-0

Formula: C15H12N2O2

Categories: Active Pharmaceutical Ingredients > Nervous System Drugs

Phenytoin is an inactive voltage-gated sodium channel stabilizer.Target: Sodium ChannelPhenytoin is an antiepileptic drug. It is useful to treat partial seizures and generalized tonic-clonic seizures but not primary generalized seizures such as absence seizures or myoclonic seizures. Phenytoin is believed to protect against seizures by causing voltage-dependent block of voltage-gated sodium channels [1]. Phenytoin has low affinity for resting sodium channels at hyperpolarized membrane poMore

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5-Methyl-4,5,6,7-tetrahydrothiazolo[5,4-c]pyridine

CAS No: 720720-96-7

Formula: C8H11ClN2O2S

Categories: Active Pharmaceutical Ingredients > Other Chemical Drugs

5-Methyl-4,5,6,7-tetrahydrothiazolo[5,4-c]pyridine-2-carboxylic Acid Hydrochloride is used as a reagent in the synthesis of N-(2-acylaminobenzyl or 2-acylaminoheterocyclylmethyl)thiophene-2-carboxamide derivatives as antithrombotics. It is also used as a reagent in the synthesis of diamide derivatives as FXa inhibitors. 5-Methyl-4,5,6,7-tetrahydrothiazolo[5,4-c]pyridine-2-carboxylic Acid Hydrochloride is an intermediate for Edoxaban (E555520).More

Fluorometholone

CAS No: 426-13-1

Formula: C22H29FO4

Categories: Active Pharmaceutical Ingredients > Hormones and the Endocrine System

Fluorometholone is the topical synthetic glucocorticoid. Its tropical anti-inflammatory effect is 40 times as much as hydrocortisone, but their effects of oral administration are almost equal. It is mainly used for local treatment of skin allergy, pruritus, rash and other diseases related to allergy. Oral administration is also used for the treatment of breast cancer, childhood leukemia, connective tissue disease, and so on.More

Miltefosine

CAS No: 58066-85-6

Formula: C21H46NO4P

Categories: Active Pharmaceutical Ingredients > Antineoplastic Agents

Miltefosine is a broad spectrum antimicrobial, anti-leishmanial, phospholipid agent acting by inhibiting the PI3K/Akt activity. 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

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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