N-Acetyl (Propyl) Cysteine (NAPR) is a metabolite of 1-bromopropane (nPB), which is used as a liquid or gaseous solvent with a characteristic hydrocarbon odor. It is widely used for metal cleaning, foam gluing, and dry cleaning. nPB has been classified as a human carcinogen. Occupation exposure to nPB in higher concentrations has resulted in significant injuries. Reported symptoms of overexposure affect the nervous system and include confusion, slurred speech, dizziness, paresthesias, and difficulty walking; unusual fatigue and headaches; development of arthralgias; visual disturbances (difficulty focusing); and muscle twitching. Symptoms may persist for over a year.
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