For professionals in the pharmaceutical and fine chemical industries, the ability to efficiently source key chemical intermediates is crucial for project success. CAS 189956-45-4, known chemically as 4-[(4-Hydroxy-2-pyrimidinyl)amino]benzonitrile, is one such compound whose availability and quality directly impact research and manufacturing timelines. This article provides insights for procurement specialists and R&D scientists on how to navigate the market and buy this essential intermediate from reliable manufacturers.
Understanding the Value of CAS 189956-45-4
4-[(4-Hydroxy-2-pyrimidinyl)amino]benzonitrile (C11H8N4O, MW 212.21) is a white powder intermediate, primarily recognized for its application in pharmaceutical synthesis, notably as a precursor for Rilpivirine. Its high purity (often ≥99%) is a critical factor for its effectiveness in downstream reactions, ensuring predictable outcomes in drug development. When you decide to buy this specific CAS number, you are investing in the quality of your final product.
Key Factors for Procurement Managers
Procurement managers constantly balance cost, quality, and supply assurance. When looking to purchase CAS 189956-45-4, consider the following:
Why Source from a China Manufacturer?
China has emerged as a global hub for chemical manufacturing, offering a wide array of intermediates at competitive prices. As a leading supplier, we are dedicated to meeting the stringent demands of the global pharmaceutical market. When you choose to buy 4-[(4-Hydroxy-2-pyrimidinyl)amino]benzonitrile from us, you are assured of high purity and a commitment to reliable supply. Our manufacturing processes are designed to meet rigorous quality standards, making us an ideal partner for your sourcing needs.
Initiating Your Purchase
To secure your supply of CAS 189956-45-4, we encourage you to submit an inquiry for a quote. We are prepared to provide you with the necessary technical data and discuss how we can best meet your procurement requirements. Partner with a trusted manufacturer to ensure the quality and timely availability of this critical pharmaceutical intermediate.
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.