A dispenser for dispensing a liquid or pasty compound that has a dispenser head which has a dispenser opening and a dispenser lower part, a storage chamber, and a pump device in the dispenser head. The compound can be dispensed out of the storage chamber via the dispenser opening by the pump device. The storage chamber is additionally produced as a bag-like storage chamber part and is received in the dispenser lower pat in a replaceable manner. The storage chamber part has an adapter part for interacting with the pump device in order to conduct the compound, and the adapter part has a cover element which can be acted upon in order to form an opening of the storage chamber. A seal wall which extends so as to surround the cover element is suitable for sealingly interacting with the dispenser.