Apart from natural, synthetic, synthetic non-nitrogenous, which of the following is also a local anesthetic?

Correct Answer: Clove oil
Natural anesthetic is cocaine. Due to its uses in drug abuse, this is not used anymore in practices. Synthetic nitrogenous local anesthetics are procaine, benzocaine, lignocaine, cinchocaine, bucricaine. Synthetic non-nitrogenous will be benzyl alcohol and propanediol. Clove oil, phenol, chlorpromazine can also be used as a local anesthetic. Clove oil is being used in dentistry purposes.