väliaineisiin
Väliaineisiin, often translated as "intermediate substances" or "mediating agents" in English, refers to substances that play a role in a chemical or biological process by being formed and then consumed, or by facilitating a reaction without being permanently altered. These substances are transient and are not the final product of the overall process. In organic chemistry, intermediates are often highly reactive species that exist only for a short time during a multi-step reaction mechanism. Examples include carbocations, carbanions, and free radicals. These reactive intermediates are crucial for understanding how reactions proceed and can be detected and studied using various spectroscopic techniques.
In biological systems, väliaineisiin can refer to molecules involved in signal transduction pathways. For instance, secondary