The Merck Index* Online

For over 130 years The Merck Index has been regarded as the most authoritative and reliable source of key physical, pharmacological and historical information on chemicals, drugs and biologicals. Since 2013, it has been updated by the Royal Society of Chemistry.

The Merck Index* Online contains over 12,000 monographs and is continuously expanded with expert-curated content highlighting only the most relevant literature and patents.