H-D-Trp-OH (D-Tryptophan) is the D-enantiomer of tryptophan, which is an essential amino acid in the human diet.

3-Hydroxy picolinic acid is a picolinic acid derivative and is a member of the pyridine family. It is used as a matrix for nucleotides in MALDI mass spectrometry analyses

Terephthalic acid (para-Phthalic acid, 1,4-Benzenedioic acid), a raw material for polyethylene terephthalate (PET) production, is one of the most important chemicals in petrochemical industry.Terephthalic acid can be used to induce animal models of Bladder Urolithiasis .

L-Lactic acid is a natural product that is used as a food additive.,

Picolinic acid (PCL 016) is a pyridine carboxylate metabolite of tryptophan and acts as an anti-infective and immunomodulator. It acts by binding with the zinc associated with zinc finger proteins to alter their structure and inhibit function.

Senecioic acid (3-Methylcrotonic acid, 3,3-Dimethylacrylic acid, β-Methylcrotonic Acid) is an unsaturated fatty acid found in the pheromones of mealybug species and appears in the urine of patients with 3-Methylcrotonic aciduria.

Dodecanedioic acid is a dicarboxylic acid mainly used in antiseptics, top-grade coatings, painting materials, corrosion inhibitors, surfactants, and engineering plastics.

Leucomalachite green is a chief metabolite of malachite green, a triphenylmethane dye. It is one of the most commonly used reagents for presumptive blood test and gives a characteristic green color in the presence of blood.

1,3,5-Trimethoxybenzene (Phloroglucinol trimethyl ether, Sym-trimethoxybenzene, Trimethylphloroglucinol) is a potential biomarker of flavonoid intake in human. It is a human xenobiotic metabolite.

2,4-Dihydroxybenzoic acid (β-resorcylic acid, p-Hydroxysalicylic acid) is a degradation product of cyanidin glycosides from tart cherries in cell cultures and a metabolite found in human plasma after cranberry juice consumption.