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Quetiapine Hemifumarate Structure

Product Type

API

Grade

BP/USP/NF

Chemical Formula

C21H25N3O2S·0.5C4H4O4

IUPAC Name

Bis[ 2-(2-[4-(dibenzo[b,f][1,4]thiazepin-11-yl)piperazin-1-yl]ethoxy)ethanol ] (2E)-but-2-enedioate

CAS NO

111974-72-2

Molecular Weight

441.54 g/mol

Chemical Class

Atypical antipsychotics

Synonyms

PHYSIOCHEMICAL PROPERTIES

Appearance White to off-white crystalline powder
Solubility Slightly soluble in water, soluble in methanol and ethanol
Melting point 172°C–176°C
pH 5–6

Product Description

Quetiapine Hemifumarate is the fumarate salt form of quetiapine, an atypical antipsychotic used to treat schizophrenia, bipolar disorder (manic and depressive episodes), and major depressive disorder (as adjunct therapy). It helps stabilize mood, improve cognition, and reduce psychotic symptoms.

How Quetiapine Hemifumarate Works

Quetiapine primarily antagonizes serotonin (5-HT2) and dopamine (D2) receptors in the brain, helping restore the balance of neurotransmitters that regulate mood, perception, and behavior. It also affects histamine and adrenergic receptors, contributing to its sedative effects.

Use(s)

Adverse Effects

Why choose Salius for Quetiapine Hemifumarate?

  1. Regulatory-Grade Manufacturing Standards
    They maintain WHO GMP compliance, with some facilities FDA certified, and follow stringent internal QC protocols. Every batch is tested in state-of-the-art labs before release.
  2. Cost-Effectiveness
    As a generic manufacturer and export house, Salius aims to deliver high-quality APIs at competitive prices—a key advantage for cost-sensitive markets.
  3. Global Export Experience & Documentation Support
    Salius regularly exports APIs, provides regulatory documents (DMF, impurity profiles), and supports filings for international clients—even in stringent regulated markets.
  4. Documents We Provide
  5. Transparency & Trustworthiness
    They present as a government-recognized star export house with strong quality and delivery ratings.
Attribute Why Salius Pharma Is a Good Choice
Quality Certification WHO GMP, ISO 9001:2015, FDA audited facilities
Affordability & Generic Access Cost competitive generics for global supply
Export Experience Proven track record of supplying globally

What You Receive in Our Package

When you order from Salius Pharma, you receive more than just a product — you receive a complete, professionally prepared package that meets international regulatory and quality expectations.

Each Shipment Includes:

Product

Expected Delivery Time

We ensure prompt and reliable shipping worldwide. Delivery times vary depending on destination, order volume, and regulatory requirements.

Overall Delivery Time:

7 to 21 business days from dispatch, depending on your location.

FAQs

The hemifumarate salt form improves the drug’s solubility, stability, and absorption, ensuring better bioavailability compared to the free base.

Yes, Quetiapine can cause metabolic changes such as weight gain and increased cholesterol or blood sugar levels. Regular monitoring is recommended during therapy.

Quetiapine has a broader receptor affinity and produces fewer extrapyramidal symptoms (e.g., tremors, rigidity) than older typical antipsychotics.

Salius Pharma supplies Quetiapine Hemifumarate as an Active Pharmaceutical Ingredient (API).

To order, contact Salius Pharma with your quantity, market, and regulatory documentation requirements (DMF, GMP, stability data, etc.).

Salius Pharma exports globally, including Asia, Europe, Africa, the Middle East, North America, and South America.

Place an Order or Request a Quote from Salius Pharma

Looking to source Quetiapine Hemifumarate or other high-quality pharmaceutical products?
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Whether you need Active Pharmaceutical Ingredients (APIs), finished formulations, or regulatory support, our team is ready to provide dependable, compliant, and cost-effective solutions tailored to your market needs.

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