D 1590 (OTTO) 4,7-Dichloroquinoline, 99% Cas 86-98-6 - used as a drug chloroquine phosphate intermediate. D 1590 (OTTO) 4,7-Dichloroquinoline, 99% Cas 86-98-6 - used in the synthesis of hybrid aminoquinoline-triazine derivatives that show anti-microbial activity. In addition, it is used in the synthesis of novel oxazolidinones as anti-microbial agents showing efficacy against common bacterial strains.