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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 740 qualified manufacturers and 359 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.
4830 Active Pharmaceutical Ingredients items

Clomipramine hydrochloride

CAS No: 17321-77-6

Formula: C19H23ClN2.ClH

Categories: Active Pharmaceutical Ingredients > Nervous System Drugs

Off-White SolidChEBI: A hydrochloride resulting from the reaction of equimolar amounts of clomipramine and hydrogen chloride. One of the more sedating tricyclic antidepressants, it is used for the treatment of depression as well as obsessive-compulsive disorder and phobias.Clomipramine (Anafranil) is up to 50 times as potentas imipramine in some bioassays. This does not implyclinical superiority, but it might be informative about tricyclicand, possibly, other reuptake inhibitors. The chloro repMore

Didanosine

CAS No: 69655-05-6

Formula: C10H12N4O3

Categories: Active Pharmaceutical Ingredients > Saccharides

Didanosine(Videx) is a reverse transcriptase inhibitor with an IC50 of 0.49 μM.Target: NRTIs; HIVDidanosine is a dideoxynucleoside compound in which the 3'-hydroxy group on the sugar moiety has been replaced by a hydrogen. This modification prevents the formation of phosphodiester linkages which are needed for the completion of nucleic acid chains. Didanosine is a potent inhibitor of HIV replication, acting as a chain-terminator of viral DNA by binding to reverse transcriptase. DidanosinMore

Trifluridine

CAS No: 70-00-8

Formula: C10H11F3N2O5

Categories: Active Pharmaceutical Ingredients > Saccharides

Trifluridine is an irreversible thymidylate synthase inhibitor, and thereby suppresses DNA synthesis. Trifluridine is an antiviral drug for herpes simplex virus (HSV) infection. More

Ethanethiol

CAS No: 6982-46-3

Formula: C2H6S

Categories: Active Pharmaceutical Ingredients > Other Chemical Drugs

Benzenepropanol

CAS No: 122-97-4

Formula: C9H12O

Categories: Active Pharmaceutical Ingredients > Dissolving Agent

CLEAR COLOURLESS LIQUID 3-Phenyl-1-propanol occurs both in free and esterified forms in resins and balsams (e.g., benzoe resin and Peru balsam). It has been identified in fruits and cinnamon. Hydrocinnamic alcohol is a slightly viscous, colorless liquid with a floralbalsamic odor, slightly reminiscent of hyacinths. Esterification with aliphatic carboxylic acids is important because it leads to additional fragrance and flavor materials.More

Ketoprofen

CAS No: 22071-15-4

Formula: C16H14O3

Categories: Active Pharmaceutical Ingredients > Antipyretic Analgesics

Ketoprofen is a non-steroidal antiinflammatory agent, acting as a potent inhibitor of COX, with IC50s of 2 nM and 26 nM for COX-1 and COX-2 in human blood monocytes, respectively. More

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Zonisamide

CAS No: 68291-97-4

Formula: C8H8N2O3S

Categories: Active Pharmaceutical Ingredients > Nervous System Drugs

Zonisamide is a 1,2 benzisoxazole derivative and the first agent of this chemical class to be developed as an antiepileptic drug.Target: Calcium channel inhibitor; Sodium channel inhibitorZonisamide is a sulfonamide anticonvulsant approved for use as an adjunctive therapy in adults with partial-onset seizures for adults; infantile spasm, mixed seizure types of Lennox-Gastaut syndrome, myoclonic, and generalized tonic clonic seizure. Zonisamide is a 1,2 benzisoxazole derivative and the fiMore

5-Iodo-2′-deoxyuridine

CAS No: 54-42-2

Formula: C9H11IN2O5

Categories: Active Pharmaceutical Ingredients > Saccharides

Idoxuridine is an antiviral agent for feline herpesvirus type-1 with IC50 of 4.3 μM.Target: herpesvirus type-1Idoxuridine is mainly used topically to treat herpes simplex keratitis. Epithelial lesions, especially initial attacks presenting with a dendritic ulcer, are most responsive to therapy, while infection with stromal involvement are less responsive. Idoxuridine is ineffective against herpes simplex virus type 2 and varicella-zoster. More

Ulipristal acetate

CAS No: 126784-99-4

Formula: C30H37NO4

Categories: Active Pharmaceutical Ingredients > Hormones and the Endocrine System

Pale Yellow SolidChEBI: A 20-oxo steroid obtained by acetylation of the 17-hydroxy group of (11beta,17alpha)-17-acetyl-11-[4-(dimethylamino)phenyl]-3-oxoestra-4,9-dien-17-ol (ulipristal). A selective progesterone receptor modulator, which is empl yed as an emergency contraceptive.Ulipristal acetate (UPA) is a selective progesterone receptor modulator. Attributing to its higher efficacy and a similar rate of side effects compared to levonorgestrel emergency contraception, it is now recommendedMore

Nitrendipine

CAS No: 39562-70-4

Formula: C18H20N2O6

Categories: Active Pharmaceutical Ingredients > Circulatory System Drugs

Nitrendipine is a calcium channel blocker with marked vasodilator action.Target: Calcium ChannelNitrendipine is a dihydropyridine calcium channel blocker. It is used in the treatment of primary hypertension to decrease blood pressure. Nitrendipine blocked Ca2+ currents very potently, with half-block by subnanomolar concentrations. The concentration dependence of block had the form expected for 1:1 binding, with an apparent dissociation constant (Kd) of 0.36 nM. In contrast, when cells weMore

Epidermal growth factor

CAS No: 62229-50-9

Formula:

Categories: Active Pharmaceutical Ingredients > Hormones and the Endocrine System

It is suitable for the treatment of oral ulcers, erosions, scalds, burns, etc., with a large dose of human epidermal factor combined with toxins to treat gliomas, breast cancer, and skin cancer. It has a certain effect, especially for squamous cell skin cancer.More

Lomustine

CAS No: 13010-47-4

Formula: C9H16ClN3O2

Categories: Active Pharmaceutical Ingredients > Antineoplastic Agents

Lomustine is a pale yellow powder. ChEBI: An N-nitrosourea that is urea in which one of the nitrogens is substituted by a 2-chloroethyl group and by a nitroso group, while the other nitrogen is substituted by a cyclohexyl group. An alkylating antineoplastic agent, it is used in he treatment of brain tumours, lung cancer, malignant melanoma and other solid tumours.Lomustine is available in 10-, 40-, and 100-mg capsules fororal administration in the treatment of primary and metastaticbrain canMore

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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