Qingle Song

Jul 1, 2024 | onlinelibrary.wiley.com | Jiangming Zhong |Ltd. Shenzhen Guangdong |Nan Zhao |Qingle Song

1 INTRODUCTION Retinoids are an umbrella term for entire family of natural or synthetic vitamin A derivatives, and they usually have a head-to-tail structure containing four isoprene units.1 The term “retinoids” is used to describe compounds that consist of a beta-ionone ring and a polyene side chain with a specific functional group.