analgesics

Phenacetin (Acetophenetidin) is a phenylacetamide that was formerly used in ANALGESICS but nephropathy and METHEMOGLOBINEMIA led to its withdrawal from the market.

JNJ-1661010 (Takeda-25) is an effective and specific FAAH inhibitor (IC50: 10 12 nM for rat human), shows >100-fold selectivity for FAAH-1 than FAAH-2.

Etosalamide (Ethosalamide) is an antipyretic and analgesics agent.

8-Bromotheophylline (Bromotheophylline) is the active moiety of pamabrom, a mixture of 2-amino-2-methyl-propanol and bromotheophylline. From this mixture, 8-Bromotheophylline acts as a weak diuretic that has been used along with some analgesics to relieve the symptoms of premenstrual syndrome

FENPIPRAMIDE is an anticholinergic agent available as a hydrochloride salt. It serves as the active ingredient in certain veterinary compounds used as analgesics or detoxifying agents. Historically, FENPIPRAMIDE was employed as an antispasmodic in human obstetrics.

Bilaid C is a tetrapeptide μ-opioid receptor agonist (Ki= 210 nM in HEK293 cell membranes expressing the human receptor) that has been found inPenicillium.1It inhibits forskolin-induced cAMP accumulation by 77% in HEK293 cells expressing the human μ-opioid receptor when used at a concentration of 10 μM. Bilaid C induces inward rectifying potassium channel (Kir) currents in rat locus coeruleus slices that endogenously express high levels of the μ-opioid receptor (EC50= 4.2 μM). 1.Dekan, Z., Sianati, S., Yousuf, A., et al.A tetrapeptide class of biased analgesics from an Australian fungus targets the μ-opioid receptorProc. Natl. Acad. Sci. USA116(44)22353-22358(2019)

Flupirtine HCl is the salt form of Flupirtine, also known as W-2964, an aminopyridine that functions as a centrally acting non-opioid analgesic. It first became available in Europe in 1984, and is sold mainly under the names Katadolon, Trancolong, Awegal, Efiret, Trancopal Dolo, and Metanor. Like nefopam, it is unique among analgesics in that it is a non-opioid, non-NSAID, non-steroidal centrally acting analgesic. Flupirtine is a selective neuronal potassium channel opener that also has NMDA receptor antagonist and GABAA receptor modulatory properties.

C3001a is a selective activator for TREK, against other two-pore domain K+(K2P) channels. C3001a binds to the cryptic binding site formed by P1 and TM4 in TREK-1. C3001a targets TREK channels in the peripheral nervous system to reduce the excitability of nociceptive neurons. In neuropathic pain, C3001a alleviated spontaneous pain and cold hyperalgesia. In a mouse model of acute pancreatitis, C3001a alleviated mechanical allodynia and inflammation. C3001a represents a lead compound which could advance the rational design of peripherally acting analgesics targeting K2P channels without opioid-like adverse effects.

Decanoyl Chloride is used in the synthesis of an effective metalloproteinase inhibitor. Also acts as a reagent in the synthesis of reversible α-ketoheterocycle inhibitors of fatty acid amide hydrolase as potnetial analgesics.

ω-Conotoxin FVIA is an inhibitor of N-type Ca²⁺ channels (Caᵥ2.2), shown to alleviate mechanical and thermal pain abnormalities in a rat model of caudal nerve injury. This compound has potential utility in the research of potent analgesics with minimal side effects [1].