We are one of India's leading manufacturers, exporters & suppliers of Ortho Amino Para Nitro Phenol (OAPNP). Its chemical name is 2-AMINO-4-NITROPHENOL. The CAS Number of Ortho Amino Para Nitro Phenol (OAPNP) is 99-57-0 and its chemical formula is C6H6N2O3. The most common end use is Dyes .