Product Name: Pramipexole Dihydrochloride Monohydrate CAS: 191217-81-9 MF:C10H21Cl2N3OS MW:302.26 Appearance: White or Off-White Solid Assay:99.53% Usage:It is sometimes used off-label as a treatment for cluster headache and to counteract the problems with sexual dysfunction experienced by some u sers of the selective serotonin reuptake inhibitor (SSRI) antidepressants.