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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

Phenol red

CAS No: 143-74-8

Formula: C19H14O5S

Categories: Active Pharmaceutical Ingredients > Buffering

Used as an acid-base indicator, the color range of pH: 6.8 (sulfur) -8.4 (red). Also used in biochemical research. Purpose: Acid-base indicator, color change range pH: 6.8 (yellow) -8.4 (red). Full measurement of blood carbon dioxide, preparation of disaccharide iron urea medium indicator in bacterial serum test. Its sodium salt is used to determine liver function. Also used in biochemical research.More

Azelastine hydrochloride

CAS No: 79307-93-0

Formula: C22H24ClN3O.ClH

Categories: Active Pharmaceutical Ingredients > Antiallergic Drugs

Azelastine HCl is a potent, second-generation, selective, histamine antagonist.Target: Histamine ReceptorAzelastine is a selective H(1)-receptor antagonist that inhibits histamine release and interferes with activation of several other mediators of allergic inflammation. Azelastine can inhibit CHMCs activation and release of IL-6, tryptase, and histamine. On an equimolar basis, azelastine was a more potent inhibitor than olopatadine [1]. Topical azelastine progressively improved itchingMore

Sodium acetate trihydrate

CAS No: 6131-90-4

Formula: C2H4O2.3H2O.Na

Categories: Active Pharmaceutical Ingredients > Flocculant

white to colourless crystals or powder Anhydrous salt is a colorless crystalline solid; density 1.528 g/cm3; melts at 324°C; very soluble in water; moderately soluble in ethanol. The colorless crystalline trihydrate has a density 1.45 g/cm3; decomposes at 58°C; is very soluble in water; pH of 0.1M aqueous solution is 8.9; moderately soluble in ethanol, 5.3 g/100mL. Sodium acetate occurs as colorless, transparent crystals or agranular crystalline powder with a slight acetic acid odor.More

Dinitolmide

CAS No: 148-01-6

Formula: C8H7N3O5

Categories: Active Pharmaceutical Ingredients > Antiparasitic Drugs

Yellowish solid. Very slightlysoluble in water; soluble in acetone, acetonitrile,dioxane, and dimethylformamide.Yellowish, crystalline solid. Mp: 177°C. Very slightly soluble in water. Soluble in acetone, acetonitrile, and dimethylformamide. Used as an anti-parasite drug for poultry. Store in a cool, ventilated place, away from acute fire hazards and easily oxidized materials.More

Tiotropium bromide

CAS No: 136310-93-5

Formula: C19H22NO4S2.Br

Categories: Active Pharmaceutical Ingredients > Respiratory Drugs

Tiotropium Bromide (BA679 BR) is a muscarinic acetylcholine receptor (mAChR) antagonist that blocks the binding of the acetylcholine ligand and subsequent opening of the ligand-gated ion channel. More

Lidocaine hydrochloride

CAS No: 73-78-9

Formula: C14H22N2O.ClH

Categories: Active Pharmaceutical Ingredients > Anesthetic Agents

Lidocaine Hcl salt, an amide local anesthetic, has anti-inflammatory properties in vitro and in vivo, possibly due to an attenuation of pro-inflammatory cytokines, intracellular adhesion molecule-1 (ICAM-1), and reduction of neutrophils influx.Target: Lidocaine is a common local anesthetic and antiarrhythmic drug. Lidocaine is used topically to relieve itching, burning and pain from skin inflammations, injected as a dental anesthetic or as a local anesthetic for minor surgery. Lidocaine,More

Paclitaxel

CAS No: 33069-62-4

Formula: C47H51NO14

Categories: Active Pharmaceutical Ingredients > Antineoplastic Agents

Paclitaxel is a potent anticancer medication which can promote microtubule (MT) assembly, inhibit MT depolymerization, and change MT dynamics required for mitosis and cell proliferation. More

Metronidazole

CAS No: 443-48-1

Formula: C6H9N3O3

Categories: Active Pharmaceutical Ingredients > Antiparasitic Drugs

Metronidazole is a nitroimidazole antibiotic medication used particularly for anaerobic bacteria and protozoa.Target: Antibacterial; AntiparasiticMetronidazole is a nitroimidazole antibiotic medication used particularly for anaerobic bacteria and protozoa. Metronidazole is an antibiotic, amebicide, and antiprotozoal.[1] It is the drug of choice for first episodes of mild-to-moderate Clostridium difficile infection [2]. Metronidazole, taken up by diffusion, is selectively absorbed by anaeMore

Calcium bromide

CAS No: 7789-41-5

Formula: Br2Ca

Categories: Active Pharmaceutical Ingredients > Nervous System Drugs

Calcium bromide is an inorganic salt with the molecular formula of CaBr2 and a molecular weight of 199.89. It is a colorless oblique needle-shaped crystal or block, odorless, salty and bitter. Its relative density is 3.353 (25°C). It is very soluble in water, and its aqueous solution is neutral. It is soluble in ethanol, acetone and acid, slightly soluble in methanol and liquid ammonia, and insoluble in ether or chloroform.More

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Florfenicol

CAS No: 73231-34-2

Formula: C12H14Cl2FNO4S

Categories: Active Pharmaceutical Ingredients > Antipyretic Analgesics

Florfenicol, a commonly used veterinary antibiotic, is currently indicated for the treatment of bovine respiratory disease, and also used in aquaculture for the control of enteric septicemia in catfish. Florfenicol can induce early embryonic death in eggs, with an LC50 of 1.07 μg/g. More

Guaiacol

CAS No: 90-05-1

Formula: C7H8O2

Categories: Active Pharmaceutical Ingredients > Respiratory Drugs

Guaiacol, a phenolic compound isolated from Guaiac resin, inhibits LPS-stimulated COX-2 expression and NF-κB activation[1]. Anti-inflammatory activity[1]. More

Doxycycline hyclate

CAS No: 24390-14-5

Formula: C22H24N2O8.1/2C2H6O.ClH.1/2H2O

Categories: Active Pharmaceutical Ingredients > Antibiotics

Doxycycline (hyclate) is a tetracycline antibiotic and broad-spectrum metalloproteinase (MMP) inhibitor. More

Turpentine oil

CAS No: 8006-64-2

Formula:

Categories: Active Pharmaceutical Ingredients > Perfuming

Turpentine is oleorosin extracted from trees of pinus (pinacae). It is a yellowish, opaque, sticky mass with a characteristic odor and taste. It is used extensively in different industries associated with the manufacturing of polishes, grinding fl uids, paint thinners, resins, degreasing solutions, clearing materials, and ink making.

The two primary uses of turpentine in industry are as a solvent and as a source of materials for organic synthesis. As a solvent, turpentine is used fMore

Vinpocetine

CAS No: 42971-09-5

Formula: C22H26N2O2

Categories: Active Pharmaceutical Ingredients > Heterocyclic Compound

Vinpocetine(Cavinton; Ethyl apovincaminate) is a selective for PDE1 (IC50 = 21 μM). Also blocks voltage-gated Na+ channels.IC50 value:Target: PDE1; Na+ channel More

Azelastine

CAS No: 58581-89-8

Formula: C22H24ClN3O

Categories: Active Pharmaceutical Ingredients > Antiallergic Drugs

Azelastine is a potent, second-generation, selective, histamine antagonist.Target: Histamine ReceptorAzelastine is a selective H(1)-receptor antagonist that inhibits histamine release and interferes with activation of several other mediators of allergic inflammation. Azelastine can inhibit CHMCs activation and release of IL-6, tryptase, and histamine. On an equimolar basis, azelastine was a more potent inhibitor than olopatadine [1]. Topical azelastine progressively improved itching andMore

Nosiheptide

CAS No: 56377-79-8

Formula: C51H43N13O12S6

Categories: Active Pharmaceutical Ingredients > Feed Additive

Nosiheptide (Multhiomycin), a thiopeptide antibiotic produced by Streptomyces actuosus, inhibits bacterial protein synthesis and bears a unique indole side ring system and regiospecific hydroxyl groups on the characteristic macrocyclic core. Nosiheptide has been widely used as a feed additive for animal growth[1][2]. More

Desmopressin acetate

CAS No: 16789-98-3

Formula: C48H68N14O14S2

Categories: Active Pharmaceutical Ingredients > Urinary System Drugs

Desmopressin acetate(DDAVP, Stimate) is synthetic 1-desamino-8-D-argininevasopressin. Its efficacy, ease of administration (intranasal),long duration of action, and lack of side effects make itthe drug of choice for the treatment of central diabetesinsipidus. It may also be administered intramuscularly orintravenously. It is preferred to vasopressin injectionand oral antidiuretics for use in children. It is indicatedin the management of temporary polydipsia and polyuriaassociated with trauma toMore

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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