Thieno[3,2-b]thiophene

Yurui (Shanghai) Chemical Co., Ltd, established in 2009, is a manufacturer and trading company supplying active pharmaceutical ingredients, pharmaceutical intermediates and fine chemicals, and excipients, alongside outsourcing, custom synthesis, and consultation services. Based in Shanghai's Pudong New Area, the company offers CRO, CMO, and CDMO contract services to customers across North and South America, Europe, Asia, the Middle East, and Africa, competing on brand recognition, international certification, experienced R&D personnel, production capacity, and a broad product line, while accommodating buyer specifications and small orders.