Hyperthyroidism, a condition characterized by an overactive thyroid gland producing excessive thyroid hormones, requires effective management to prevent serious health complications. Propylthiouracil (CAS 51-52-5) is a cornerstone medication in this regard, acting as a potent antithyroid agent. As a leading manufacturer of this vital API in China, we are committed to providing the pharmaceutical industry with a product that ensures optimal therapeutic outcomes.
Propylthiouracil's primary mechanism of action involves inhibiting the enzymes – specifically, thyroid peroxidase – that are responsible for synthesizing thyroid hormones. It also interferes with the peripheral conversion of thyroxine (T4) to triiodothyronine (T3), further reducing thyroid hormone activity in the body. This dual action makes it highly effective in controlling the symptoms of hyperthyroidism and managing conditions like Graves' disease.
Our Propylthiouracil API, manufactured to a minimum assay of 99.5% and adhering to USP, BP, and EP standards, is supplied to pharmaceutical companies globally. We understand that reliable access to high-purity ingredients is crucial for formulating effective treatments. By choosing to buy Propylthiouracil from our China-based manufacturing facility, you secure a product that is both high-quality and cost-effective, backed by rigorous quality control and GMP certifications.
For healthcare providers and pharmaceutical formulators, understanding the precise role of Propylthiouracil in patient care is key. Its use is often indicated when other antithyroid treatments are not suitable or as a preparatory step before thyroid surgery or radioactive iodine therapy. The consistent quality of our API ensures that formulations will perform reliably, contributing to better patient management of thyroid disorders.
We are proud to be a trusted supplier of Propylthiouracil, supporting the critical work of pharmaceutical companies in improving thyroid health. If your organization is seeking a dependable source for this essential API, we invite you to inquire about our product specifications, pricing, and supply capabilities. Partner with us for your Propylthiouracil needs and experience the advantage of working with a quality-focused China manufacturer.
Manufacturing Facilities






Professional Export Experience
to Global Customers
1. 20 years of R&D, manufacturing and sales experience, serving customers in 60 countries and regions around the world;
2. Own R&D laboratory, pilot platform and large-scale production workshop, which can meet the audit requirements of global customers;
3. We can satisfy customers' perfect transition from small scale lab requirements (gram level) to commercialization requirements (hundred tons level).
A: We don't have Minimum Order Quantity, exact quantity should be provided before quotation for us to calculate the exact cost.
A: We don't provide free samples due to lots of request and expensive international courier's cost, we can deduct the sample charge after commercial order placed.
A: Our payment terms: Small or sample order: T/T IN ADVANCE. Commercial order: First order should be by T/T IN ADVANCE or L/C at sight, and following orders T/T 30~90days is acceptable subject to approval of credit application.