In the complex world of pharmaceutical manufacturing and research, the availability of high-quality chemical intermediates is paramount. One such crucial compound is 5-Bromoquinazolin-6-ylthiourea, identified by CAS Number 842138-74-3. As a dedicated manufacturer and supplier, we understand the stringent requirements that pharmaceutical professionals have for this essential chemical. This article aims to provide a comprehensive overview for R&D scientists and procurement managers looking to buy this compound.
Understanding 5-Bromoquinazolin-6-ylthiourea's Role
5-Bromoquinazolin-6-ylthiourea is primarily recognized for its critical role as a pharmaceutical intermediate. Its molecular structure makes it a key building block in the synthesis of important ophthalmic drugs such as Brimonidine and Brimonidine tartrate. The purity and consistent quality of this intermediate directly impact the efficacy and safety of the final active pharmaceutical ingredients (APIs). Therefore, sourcing from a reliable manufacturer that guarantees high purity (typically ≥98.0%) is non-negotiable.
Beyond its role as an intermediate, this compound also serves as a vital impurity standard. In the pharmaceutical industry, identifying and quantifying impurities is a cornerstone of drug safety and regulatory compliance. 5-Bromoquinazolin-6-ylthiourea is a known impurity of Brimonidine, making it an indispensable reference standard for analytical chemists and quality control departments. Its availability as a precisely characterized standard allows for the validation of analytical methods and ensures that drug products meet strict international guidelines.
Key Considerations When Sourcing
For procurement managers and R&D scientists, selecting the right supplier for 5-Bromoquinazolin-6-ylthiourea involves several considerations:
Why Partner with a Dedicated Manufacturer?
As a leading manufacturer in China, we pride ourselves on delivering 5-Bromoquinazolin-6-ylthiourea that meets the highest industry standards. We invest in advanced synthesis technologies and rigorous quality control processes to ensure batch-to-batch consistency. Our commitment extends to providing competitive pricing and flexible packaging solutions to meet diverse project needs, from small-scale R&D to large commercial volumes. When you seek to purchase this critical intermediate, consider the advantages of direct sourcing from an experienced producer.
We invite you to contact us for a detailed quote and to discuss your specific requirements for 5-Bromoquinazolin-6-ylthiourea. Our team is ready to assist you in securing this vital chemical for your pharmaceutical development and manufacturing endeavors.
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.