Bismuth subsalicylate, with a nominal chemical formula of C₇H₅BiO₄, is a colloidal substance obtained by hydrolysis of bismuth salicylate (Bi{C₆H₄(OH)CO₂}₃). The actual structure is unknown and the formulation is only approximate. Recent evidence indicates that it is composed of a bismuth oxide core structure with salicylate ions attached to the surface. A model structure has recently been published having the composition Bi₃₈O₄₄{C₆H₃(OH)CO₂}₂₆. It is a drug used to treat temporary discomforts of the stomach and gastrointestinal tract, such as diarrhea, heartburn and nausea. Commonly known as pink bismuth, it is the active ingredient in popular medications such as Pepto-Bismol and, since 2003, in Kaopectate.

As a derivative of salicylic acid, bismuth salicylate displays anti-inflammatory and bactericidal action, and also acts as an antacid.

The term "sub" refers to the high oxygen content in the molecule and the presence of Bi-O moieties.

Characterization of the properties of bismuth subsalicylate has been difficult due to its insolubility and its partial hydrolysis. The crystal structure of the molecule is available here, which shows an octahedral cluster. Two crystal structures are observed, them being:

Jeffrey Warren "Jeff" Daniels (born February 19, 1955) is an American actor, musician and playwright. He founded a non-profit theatre company, the Purple Rose Theatre Company, in his home state of Michigan. He has performed in a number of stage productions, both on and off Broadway, and has been nominated for the Tony Award as Best Actor for the Broadway play God of Carnage (2009), along with his other three cast-mates.

He has had a thriving film career, from his debut in 1981 in Ragtime, through State of Play in 2009. For his film work, he has received three Golden Globe Award nominations, including as Best Performance by an Actor in a Motion Picture—Comedy/Musical for Woody Allen's The Purple Rose of Cairo (1985) (hence the name of his theatre company). He has also received nominations by the Screen Actors Guild, Satellite Awards, and several others for his work in The Squid and the Whale (London Critics Circle Awards, Independent Spirit Awards, Chlotrudis Awards and Gotham Awards). He played Debra Winger's husband in the 1983 Oscar-winning film Terms of Endearment.

James Douglas Muir "Jay" Leno /ˈlɛnoʊ/ (born April 28, 1950) is an American stand-up comedian and television host.

From 1992 to 2009, Leno was the host of NBC's The Tonight Show with Jay Leno. Beginning in September 2009, Leno started a primetime talk show, titled The Jay Leno Show, which aired weeknights at 10:00 p.m. (Eastern Time, UTC-5), also on NBC. After The Jay Leno Show was canceled in January 2010 amid a host controversy, Leno returned to host The Tonight Show with Jay Leno on March 1, 2010.

James "Jay" Leno was born in New Rochelle, New York, in 1950. His mother, Catherine (née Muir; 1911–1993), a homemaker, was born in Greenock, Scotland, and came to the United States at age 11. Leno's father, Angelo (1910–1994), who worked as an insurance salesman, was born in New York to immigrants from Flumeri, Italy. Leno grew up in Andover, Massachusetts, and although his high school guidance counselor recommended that he drop out of school, he later obtained a Bachelor's degree in speech therapy from Emerson College, where he started a comedy club in 1973. Leno's siblings include his late older brother, Patrick, who was a Vietnam veteran and a lawyer.