this compound (free base)

YM-31636 (free base) is an orally active, potent, and selective agonist of the 5-HT3 receptor with a pKi value of 9.67. This compound induces contraction in isolated guinea pig distal colon and provokes tachycardia in isolated guinea pig right atrium, demonstrating a relative intrinsic activity of about 0.23. YM-31636 (free base) holds potential for research in constipation management.

Fasitibant chloride (MEN16132 free base) is a potent and specific nonpeptide antagonist of the bradykinin B2 receptor (B2R), effectively reducing joint pain and mitigating joint edema in a rat model of Carrageenan-induced arthritis.

Parconazole Free Base is used in veterinary as an oral fungicide with a broad-spectrum activity against dermatophytes, yeasts, and others fungi. This compound does not have any antibacterial effect. The mechanism of action involves inhibition of the fungal cytochrome P450 dependent 14alpha-dimethylation of lanosterol to ergosterol.

Cemadotin hydrochloride is the salt from of Cemadotin (free base), also known as, LU103793, a mitosis inhibitor potentially for the treatment of solid tumours. Cemadotin is also a synthetic derivative of Dolastatin 15, an antiproliferative compound which was isolated from the mollusk Dolabella auricularia. Like Dolastatin 15, LU103793 is highly cytotoxic in vitro (IC50 = 0.1 nM). LU103793 inhibits microtubule polymerization in a concentration-dependent manner (IC50 = 7 microM). Treatment with this compound also induced depolymerization of preassembled microtubules. Cell cycle analysis of tumor cell lines treated with LU103793 indicated a block in the G2-M phase.

IGUANA-1 free base (STL5-T-0057) acts as a selective ALDH1 B1 inhibitor with an IC50 value of 30 nM, and efficaciously inhibits the growth of SW480 cells in both adherent and spheroid conditions, yielding IC50 values of 2.46 μM and 0.39 μM, respectively; this compound is utilized in cancer research.

RX 801077 (2 BFI free base), a selective imidazoline I2 receptor (I2R) agonist with a K_i value of 70.1 nM, demonstrates anti-inflammatory and neuroprotective properties, making it a potential research candidate for traumatic brain injury (TBI).

Compound 24, a 5-HT2 agonist-1, selectively activates 5-HT2A, 5-HT2B, and 5-HT2C receptors with IC50 values of 10 nM, 8.3 nM, and 1.6 nM, respectively. The free base form of this compound is utilized in research pertaining to depression, alcoholism, tobacco and cocaine addiction, inflammation, cluster headaches, PTSD, seizure disorders, and additional CNS disorders [1].

Sphingosine (d16:1), an unconventional sphingolipid, is synthesized through enzymatic reactions starting with the condensation of myristoyl-CoA and serine by serine palmitoyltransferase long-chain base subunit 3 (SPTLC3), which shows a preference for myristoyl-CoA. This compound is found in minute quantities in its free form in human plasma and as a component of various plasma sphingolipids, such as sphingosine-1-phosphate, ceramides, sphingomyelins, and in brain cerebrosides, albeit at lower concentrations than the more common d18:1 sphingoid base. Sphingosine (d16:1) acts as an inhibitor of PKC in mixed micelle assays and diminishes superoxide production triggered by phorbol 12-myristate 13-acetate in isolated human neutrophils, as well as inhibiting the growth of CHO cells with IC50 values of 1 and 3.2 µM, respectively. Additionally, the concentration of sphingolipids containing sphingosine (d16:1) in the plasma is linked to the dietary consumption of saturated fatty acids and protein among ethnic Chinese populations.