Hydroxypropyl betadex

Formula : C42-H70-O35.C2-H5-O
CAS : 128446-35-5 

Derivative of beta-cyclodextrin that is used as an excipient for steroid drugs and as a lipid chelator.

Hydroxypropyl methylcellulose

Formula : C3-H8-O2.x-C-H4-O.x-Unspecified
CAS : 9004-65-3 

Polymeric compounds that contain repeating units of hydroxypropyl methylcellulose. The properties of hypromellose polymers can vary greatly and are defined by their molecular weight, the percentage of hydroxyl groups, the percentage of hydroxypropyl groups, and viscosity measurements. They are found a broad variety of commercial products such as FOOD ADDITIVES; EXCIPIENTS; and LUBRICANTS.