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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

Bromhexine

CAS No: 3572-43-8

Formula: C14H20Br2N2

Categories: Active Pharmaceutical Ingredients > Respiratory Drugs

ChEBI: A substituted aniline that is 2,4-dibromoaniline which is substituted at position 6 by a [cyclohexyl(methyl)amino]methyl group. It is used (as the monohydrochloride salt) as a mucolytic for the treatment of respiratory disorders associated with productive ough (i.e. a cough characterised by the production of sputum).More

Megestrol acetate

CAS No: 595-33-5

Formula: C24H32O4

Categories: Active Pharmaceutical Ingredients > Hormones and the Endocrine System

Megestrol Acetate is a synthetic progesteronal agent with an IC50 of 260 μM for the inhibition of HegG2.Target: Progesterone ReceptorMegestrol acetate, also known as 17α-acetoxy-6-dehydro-6-methylprogesterone, and sometimes abbreviated as MGA or MA, is a steroidal progestin and progesterone derivative (specifically, a 17-hydroxylated progesterone) with predominantly progestational and antigonadotropic effects. Megestrol acetate is a good candidate for muscle wasting treatment and futureMore

Artemisinin

CAS No: 63968-64-9

Formula: C15H22O5

Categories: Active Pharmaceutical Ingredients > Skin Conditioning

Artemisinin is an anti-malarial drug isolated from the aerial parts of Artemisia annua L. plants. More

Retinol palmitate

CAS No: 79-81-2

Formula: C36H60O2

Categories: Active Pharmaceutical Ingredients > Skin Conditioning

Retinyl palmitate is an ester of Retinol and is the major form of vitamin A found in the epidermis. Retinyl palmitate has been widely used in pharmaceutical and cosmetic formulations. More

Methotrexate

CAS No: 59-05-2

Formula: C20H22N8O5

Categories: Active Pharmaceutical Ingredients > Antineoplastic Agents

Methotrexate is a folate antagonist, with median IC50 of 78 nM in in vitro assay.More

(+)-Vincristine

CAS No: 57-22-7

Formula: C46H56N4O10

Categories: Active Pharmaceutical Ingredients > Antineoplastic Agents

Vincristine (Leurocristine) is a microtubule-destabilizing agent (MDA). Vincristine (Leurocristine) binds to tubulin and inhibits the formation of microtubules, thereby inhibiting mitosis of the cancer cell. Vincristine (Leurocristine) is used to treat hematologic cancers, such as leukemia and lymphoma, and childhood sarcomas[1][2]. More

Ropivacaine

CAS No: 84057-95-4

Formula: C17H26N2O

Categories: Active Pharmaceutical Ingredients > Anesthetic Agents

ChEBI: A piperidinecarboxamide-based amide-type local anaesthetic (amide caine) in which (S)-N-propylpipecolic acid and 2,6-dimethylaniline are combined to form the amide bond.More

Scopolamine

CAS No: 51-34-3

Formula: C17H21NO4

Categories: Active Pharmaceutical Ingredients > Nervous System Drugs

Scopolamine is a high affinity (nM) muscarinic antagonist. 5-HT3 receptor-responses are reversibly inhibited by Scopolamine with an IC50 of 2.09 μM. More

1122 Active Pharmaceutical Ingredients Suppliers

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Duloxetine

CAS No: 116539-59-4

Formula: C18H19NOS

Categories: Active Pharmaceutical Ingredients > Nervous System Drugs

Duloxetine (Cymbalta) is a newer antidepressant. It islargely like venlafaxine, which is an SNERI (selective norepinephrinereuptake inhibitor).More

Streptomycin

CAS No: 57-92-1

Formula: C21H39N7O12

Categories: Active Pharmaceutical Ingredients > Antibiotics

Crystalline PowderMore

Amprolium chloride

CAS No: 121-25-5

Formula: C14H19N4.Cl

Categories: Active Pharmaceutical Ingredients > Veterinary Raw Materials

solidChEBI: An organic chloride salt having 1-[(4-amino-2-propylpyrimidin-5-yl)methyl]-2-methylpyridin-1-ium as the counterion. Used for prevention of coccidiosis in poultry and cattle.More

Olmesartan medoxomil

CAS No: 144689-63-4

Formula: C29H30N6O6

Categories: Active Pharmaceutical Ingredients > Circulatory System Drugs

White to off-white crystalline powderOlmesartan medoxomil was launched in the US as benicar@, an orallyadministered treatment for hypertension. This ester prodrug of olmesartan can besynthesized in 8 steps from diaminomaleonitrile by successive reactions withtrialkylorthopropanoate to access 2-propyl-imidazole-45dicarbonitrile, conversion of thetwo nitrile functions to the corresponding ethyl esters, followed by methylmagnesiumbromide addition to give the corresponding 4-(1-hydroxyalkMore

Rosiglitazone

CAS No: 122320-73-4

Formula: C18H19N3O3S

Categories: Active Pharmaceutical Ingredients > Hormones and the Endocrine System

Rosiglitazone is a type of thiazolidinedione antidiabetics. Thiazolidinedione are agonists for peroxisome-proliferator–activated receptor γ (PPAR-γ). PPAR-γ receptors are ligand-activated nuclear transcription factors that modulate gene expression, lowering blood glucose primarily by increasing insulin sensitivity in peripheral tissues. Rosiglitazone is widely used to lower blood glucose levels in patients with type 2 diabetes mellitus. More

Andrographolide

CAS No: 5508-58-7

Formula: C20H30O5

Categories: Active Pharmaceutical Ingredients > Skin Conditioning

Andrographolide is a NF-κB inhibitor, which inhibits NF-κB activation through covalent modification of a cysteine residue on p50 in endothelial cells without affecting IκBα degradation or p50/p65 nuclear translocation. 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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