42 Providing alphanumeric identifiers for laboratory methods, protocols, experiments in the fields of chemistry, analytic chemistry, pharmacology, toxicology, food and agriculture, natural products, biology, biotechnology, molecular biology, medicine, and other related fields of chemistry and science; providing alphanumeric identifiers for reactions in the fields of chemistry, pharmacology, toxicology, food and agriculture, natural products, biology, molecular biology, and other related fields of chemistry and science; providing scientific information in the fields of chemistry, analytic chemistry, pharmacology, toxicology, food and agriculture, natural products, biology, biotechnology, molecular biology, medicine, and other related fields of chemistry and science