Disclosed is a novel method for synthesizing pyrazolobenzodiazepines of formula I using intermediates of formula Pyrazolobenzodiazepines of formula I are useful in the treatment and control of solid tumors. The apparatus comprises a biodegradable bag for disposal of the sanitary product. In another aspect of a particular embodiment the VDSL repeater further includes a circuit that bypasses the amplifier when the power supply voltage is not present on the first interface.