Some advanced glazing systems can change their visible light transmittance, solar heat gain coefficient, and other properties. 1  Liquid crystal windows change from clear to frosted or dark when a voltage is applied by a control system, improving their privacy but not changing their solar heat gain.
Probenecid, also sold under the brandname Probalan, is a medication that increases uric acid excretion in the urine. It is primarily used in treating gout and hyperuricemia.
Procaine is a local anesthetic drug of the amino ester group. It is used primarily to reduce the pain of intramuscular injection of penicillin, and is also used in dentistry. Owing to the ubiquity of the trade name Novocain, procaine is sometimes referred to generically as novocaine or novacaine.