VC ethyl ether (3-O-ethyl ascorbic acid ether) is a revolutionary derivative of vitamin C, breaking through the stability limitations of traditional L-ascorbic acid. Its unique ethyl ether structure gives it excellent light and heat stability and transdermal absorption efficiency, and is known as "storable vitamin C" in the cosmetics and pharmaceutical fields. At Shaanxi Bojian Biotechnology Co., Ltd., we produce 99% high-purity VC ethyl ether through a patented crystallization process to provide long-term activity guarantee for whitening and antioxidant products.