Murexide- Ammonium Purpurate in Red Purple Powder form, has 97% minimum purity. Explicit Chemicals Pvt. Ltd. Manufactures Murexide- Ammonium Purpurate. Explicit Chemicals Pvt. Ltd. Also manufactures different types of Drug Intermediates and Specialty Chemicals. Murexide- Ammonium Purpurate has C8H8N606 molecular Formula. Its molecular weight is 284.19. This is used as research indicator and in special grade pigments.