15 keto latanoprost (free acid)

15-keto Latanoprost is a potential metabolite of latanoprost when administered to animals and is a common minor impurity in commercial preparations of the bulk drug compound. Although much less potent than latanoprost, 15-keto Latanoprost can still produce a small but measurable decrease (1 mm Hg) in intraocular pressure in normal cynomolgus monkeys at a dose of 1 μg/eye. It also acts as a miotic in normal cats, causing an 8 mm Hg reduction in pupillary diameter at 5 μg/eye, though it is not as potent as many other F-type prostaglandins, such as prostaglandin F2α, which achieves the same effect at less than 1 μg/eye.

Latanoprost is an F-series prostaglandin (PG) analog which has been approved for use as an ocular hypotensive drug. Latanoprost is an isopropyl ester, a prodrug form which is converted to latanoprost (free acid) by endogenous esterase enzymes. The free acid form is 200 times more potent than latanoprost as a ligand for the human recombinant FP receptor. 5-trans Latanoprost (free acid) is an isomer of latanoprost (free acid) wherein the double bond between carbons 5 and 6 has been changed from cis (Z) to trans (E). The trans isomer of latanoprost occurs as an impurity in commercial preparations of the bulk drug product. The present compound was prepared primarily as an analytical standard for detection and quantitation of this impurity. From what can be inferred from the study of other trans isomers of F-type prostaglandins, the biological activity of this isomer is likely to be similar to that of the cis isomer. However, there are no specific published reports on the biological activity, and on reducing intraocular pressure in particular, of 5-trans latanoprost.

4-Methylumbelliferyl-α-L-Iduronide is a common substrate for α-L-iduronidase catalytic activity.

Latanoprost is an F-series prostaglandin (PG) analog which has been approved for use as an ocular hypotensive drug. Oxidation of the C-15 hydroxyl group without isopropyl ester hydrolysis produces 15-keto latanoprost. 15-keto Latanoprost is a potential metabolite of latanoprost when administered to animals. 15-keto Latanoprost is also one of the common minor impurities found in commercial preparations of the bulk drug compound. Although much less potent that the parent compound latanoprost, 15-keto latanoprost still retains the ability to produce a small but measurable decrease (1 mm Hg) in the intraocular pressure of normal cynomolgus monkeys when administered at a dose of 1 μg/eye. 15-keto Latanoprost is also a miotic in the normal cat eye, causing an 8 mm reduction in pupillary diameter at 5 μg/eye. Again, this is not as potent as many other F-type PGs; for example, PGF2α will produce this degree of miosis at a dose of less than 1 μg/eye. Products of β-oxidation account for most of the metabolites of latanoprost recovered in plasma and urine. However, 15-keto latanoprost is a minor metabolite, and one which could be enhanced in situations where β-oxidation is reduced.

Cefpodoxime (free acid) is an oral, third-generation cephalosporin antibiotic. It is active against most Gram-positive and Gram-negative organisms, except Pseudomonas aeruginosa, Enterococcus, and Bacteroides fragilis.

IQ-1S free acid (IQ-1S) is an effective and specific c-Jun N-Terminal Kinase Inhibitor. IQ-1S inhibits murine delayed-type hypersensitivity. IQ-1S can reduce inflammation and cartilage loss associated with CIA and can serve as a small-molecule modulator for mechanistic studies of JNK function in rheumatoid arthritis. IQ-1S is highly specific for JNK and that its neutral form is the most abundant species at physiologic pH.

Dianemycin (Nanchangmycin (free acid)) is a broad spectrum polyether antibiotic, inhibits gram-positive bacteria. Nanchangmycin is a broad spectrum antiviral active against Zika virus