The present invention is directed to an irinotecan acid addition salt which is formed through addition of an acid selected from the group consisting of sulfuric acid, nitric acid phosphoric acid, methanesulfonic acid, citric acid maleic acid and succinic acid to Irinotecan, to a method for producing the salt, and to a pharmaceutical composition containing the salt. A receiver drier 1 of an air conditioner of a car has an inlet path 44 and an outlet path 46 of refrigerant formed to a body 10, and retains refrigerant. The present invention contemplates an improvement for securing the baskets within the retort, to facilitate secure rotation of the baskets and their contents, and prevent shifting of the baskets within the retort during rotation. A release mechanism is provided to permit the spool to be at least temporarily released from its normally secured orientation, thereby allowing the spool and the elongated member affixed thereto to move relative to the base, for example, in a rotating manner.