3-5 Compounds IncWrite a Review212-213-8290Be the first to review!19 W 21st St, New York, NY 10010Hi there!Be the first to review!5First-class4Better than most3About what I expected2Not the worst...1DisappointingClick to RateMore Business InfoHoursDo you know the hours for this business?NeighborhoodsFlatiron District, Midtown ManhattanCategorySemiconductor Devices Suggest an Edit