Methyl ethyl ketone (butanone) is an industrial solvent produced on a large scale. It is used in surface coatings, adhesives, printing inks, chemical intermediates, magnetic tapes, and lube oil dewaxing agents. Methyl ethyl ketone has a fruity odor similar to acetone. It is used as a flavor/fragrance agent in pharmaceuticals and cosmetics.

Choline magnesium trisalicylate is a non-acetylated salicylate used widely as a nonsteroidal anti-inflammatory drug. Choline magnesium trisalicylate inhibits inflammation-related prostaglandin synthesis. Choline magnesium trisalicylate is used to relieve the pain, tenderness, inflammation (swelling), and stiffness caused by arthritis and painful shoulder. It is also used to relieve pain and lower fever. Salicylate intoxication, known as salicylism, may occur with large doses or extended therapy. Common symptoms of salicylism include headache, dizziness, tinnitus, hearing impairment, confusion, drowsiness, sweating, vomiting, diarrhea, and hyperventilation. A more severe degree of salicylate intoxication can lead to CNS disturbances, alteration in electrolyte balance, respiratory and metabolic acidosis, hyperthermia, and dehydration.

Methyl chloride, also called chloromethane, mainly is used as a refrigerant. It’s known, that methyl chloride permeates through human epidermis when exposed at high atmospheric concentrations within relatively short timeframes. Recently published article has shown that chlorinated methyl group could be formed in humans, that might be an important target compound in future medical diagnostic programs.

Octisalate used as an ingredient in sunscreens and cosmetics. Maximum FDA-approved concentration - 5%. Range of protection - UVB. Might develop contact allergic dermatitis

Methyl pyrrolidone (or N-methyl pyrrolidone or NMP) is a small molecule acetyl‐lysine mimetic compound with potent immunomodulatory and direct anti‐myeloma activity. NMP is nontoxic, stable and already in use as a solvent in biomedical applications. This compound is under investigation in clinical trial phase I for the treatment of multiple myeloma. The study will evaluate if the NMP can be safely administered to humans at doses, which induce measurable immunological and anti-tumor effects in patients with myeloma. In addition, NMP could be useful for bone fracture repairing. NMP has shown a protective role in osteoblast differentiation in response to hypoxia, and such protection was through inhibiting the NF-κB signaling. Experiments on rodents have revealed that the compound had a remarkable anti-osteoporotic ability preserving activity in the pulp-dentine complex and preventing jawbone loss. These effects made NMP a promising candidate for the preservation of the activity of the pulp-dentin complex and jawbone thickness in post-menopausal females.

Methyl laurate (methyl dodecanoate), a flavouring agent, is found in alcoholic beverages.

Cupric salicylate is an anti-inflammatory agent which was used as pain relief for patients with osteoarthritis, rheumatoid and other degenerative diseases (as a copper-salicylate complex). The preparation seem to be discontinued for now.