• L01A Alkylating agents 67 drugs
• L01B Antimetabolites 91 drugs
• L01C Plant alkaloids and other natural products 73 drugs
• L01D Cytotoxic antibiotics and related substances 17 drugs
• L01E Protein kinase inhibitors 278 drugs
• L01F 97 drugs
• L01X Other antineoplastic agents 86 drugs