• L01A Alkylating agents 44 drugs
• L01B Antimetabolites 81 drugs
• L01C Plant alkaloids and other natural products 46 drugs
• L01D Cytotoxic antibiotics and related substances 15 drugs
• L01E Protein kinase inhibitors 101 drugs
• L01F 31 drugs
• L01X Other antineoplastic agents 98 drugs