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Phenacetin
go.drugbank.com/drugs/DB03783ApprovedWithdrawnPhenacetin was withdrawn from the Canadian market in June 1973 due to concerns regarding nephropathy (damage to or disease of the kidney).
Ethyl chloride
go.drugbank.com/drugs/DB13259ApprovedWithdrawnIt is still used in the treatment of cellulose to make ethylcellulose for commercial products. Ethyl chloride is used as a diagnostic tool to detect a dead tooth with nonviable pulp. … It was commonly used in the production of tetraethyllead (TEL), which is an additive for gasoline. It was also used in other commerical applications as a chemical reagent.
Doxecitine
go.drugbank.com/drugs/DB02594ApprovedInvestigationalDoxecitine is a synthetic form of the naturally occurring pyrimidine deoxyribonucleoside deoxycytidine. … It is an essential component of the deoxyribonucleotide pool required for DNA synthesis and repair.
Chymotrypsin
go.drugbank.com/drugs/DB09375ApprovedInvestigationalVet approvedWithdrawnChymotrypsin is the most abundant pancreatic proteases that represent up to 10-20% of the total protein synthesized by the exocrine pancreas [A32637]. … Chymotrypsin contains both the catalytic triad and oxyanion hole, and the tertiary structure of chymotrypsin is similar to [DB11237] [A32642].
Cycloserine
go.drugbank.com/drugs/DB00260ApprovedInvestigationalAntibiotic substance produced by Streptomyces garyphalus.
Tegafur-uracil
go.drugbank.com/drugs/DB09327Approved[A32073] It is approved in different countries but it is not yet approved by the FDA, Health Canada or EMA.
Cysteine
go.drugbank.com/drugs/DB00151ApprovedInvestigationalNutraceuticalA thiol-containing non-essential amino acid that is oxidized to form cystine.
Mixtures: Numeta G 13 % E Emulsion zur Infusion, Numeta G 16 % E Emulsion zur InfusionTeduglutide
go.drugbank.com/drugs/DB08900ApprovedInvestigationalThe significance of this substitution is that teduglutide is longer acting than endogenous GLP-2 as it is more resistant to proteolysis from dipeptidyl peptidase-4. FDA approved on December 21, 2012.
Demeclocycline
go.drugbank.com/drugs/DB00618ApprovedA tetracycline analog having a 7-chloro and a 6-methyl. Because it is excreted more slowly than tetracycline, it maintains effective blood levels for longer periods of time.
Droxicam
go.drugbank.com/drugs/DB09215ApprovedWithdrawnIt is used to reduce pain and inflammation in musculoskeletal disorders such as rheumatoid arthritis and osteoarthritis.