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Aceclidine (CAS 827-61-2), chemically identified as 1-azabicyclo[2.2.2]octan-3-yl acetate or 3-quinuclidinyl acetate, is a member of the quinuclidine class of compounds featuring a rigid bicyclic scaffold. Structurally, Aceclidine consists of a bridgehead nitrogen atom at the apex of the bicyclo[2.2.2]octane framework with an acetate ester at the 3-position.

Baricitinib (CAS 1187594-09-7), chemically identified as 2-[1-ethylsulfonyl-3-[4-(7H-pyrrolo[2,3-d]pyrimidin-4-yl)pyrazol-1-yl]azetidin-3-yl]acetonitrile, is a small molecule Janus kinase (JAK) inhibitor. Structurally, Baricitinib features a pyrrolo[2,3-d]pyrimidine core linked to a pyrazole ring, which is further connected to an azetidine ring bearing an ethylsulfonyl group and an acetonitrile substituent.

Atrasentan Hydrochloride (CAS 195733-43-8) is the orally available hydrochloride salt of a pyrrolidine-3-carboxylic acid derivative, featuring a complex chiral pyrrolidine ring system with three stereocenters at the 2R, 3R, and 4S positions. The molecular structure comprises a 4-(1,3-benzodioxol-5-yl) substituent at the 4-position, a 2-(dibutylamino)-2-oxoethyl group at the 1-position, and a 4-methoxyphenyl group at the 2-position of the pyrrolidine core, with a carboxylic acid functionality at the 3-position.

(S)-(-)-Verapamilic Acid Phenethylamine Salt (CAS 194854-18-7) is the 1:1 salt formed between (S)-(-)-Verapamilic Acid and (αR)-α-methylbenzenemethanamine ((R)-α-methylbenzylamine). This salt form is a key crystalline intermediate in the resolution process for producing enantiopure verapamilic acid.

Pipoxolan Hydrochloride (CAS 18174-58-8), also known as Pipisoxole Hydrochloride, is an anti-spasmodic agent that relieves smooth muscle spasms in the digestive, urinary, and gynecological systems. Chemically, Pipoxolan Hydrochloride is designated as 5,5-diphenyl-2-[2-(1-piperidinyl)ethyl]-1,3-dioxolan-4-one hydrochloride.

Minoxidil (CAS 38304-91-5) is a potent, direct-acting peripheral vasodilator that reduces peripheral resistance and produces a fall in blood pressure. Chemically, Minoxidil is designated as 6-(1-piperidinyl)-2,4-pyrimidinediamine 3-oxide. The molecule features a pyrimidine ring substituted with two amino groups at the 2- and 4-positions, a piperidine ring at the 6-position, and an N-oxide at the 3-position.