4-Hydroxy-di-isopropyl-tryptamine (4-HO-DiPT) is a synthetic hallucinogen. It is a close structural analogue of psilocin and classified as a tryptamine derivative.

The effects of 4-HO-DiPT are broadly comparable to those of other serotonergic psychedelics such as LSD and psilocybin, but they are distinguished by their relative brevity. 4-HO-DiPT is orally active at 15-20 mg, and its effects last for 2-3 hours. Shulgin "doubt[s] that there is another psychedelic drug, anywhere, that can match this one for speed, for intensity, for brevity, and sensitive to dose, at least one that is active orally." An idiosyncratic effect of the drug, also noted by Shulgin, is its tendency to induce tremors.

Some users have reported a minor audio distortion with lower dosages. Higher dosages increase the polarity of the distortion. It is defined as being slightly lower in pitch and creating several different effects, such as pitch bend, volume distortion, and rate distortion. As with most DiPT psychedelics, music can become more dissonant and less harmonious. Users have also reported a visual distortion widely comparable to the hallucinogen LSD.

Kathleen Emperatriz "Kat" DeLuna (born November 17, 1987) is a Dominican American pop singer. DeLuna has a soprano vocal range. Her debut single, "Whine Up", reached the top ten in Belgium and France, peaked inside the top forty of the Billboard Hot 100 and topped the Billboard Hot Dance Club Play chart. Her debut album, 9 Lives, was released in 2007. It peaked at number fifty-eight on the Billboard 200 and charted within the top twenty of Belgium and Poland. In 2008, DeLuna began work on her second studio album, Inside Out. It was released in Belgium in 2010, peaking at number sixteen.

In 2007, DeLuna won "Best New Artist" at the Los Premios MTV Latinoamérica 2007 awards. In 2008, she won "Best New Artist" and "Best Urban Artist" at the TMF Awards. DeLuna's single, "Whine Up", won the award for "Latin Dance Club Play Track Of The Year" at the 2008 Latin Billboard Music Awards. She also won a Casandra Award in 2008 for "Best International Artist".

Kat DeLuna was born on November 17, 1987, in the Bronx borough of New York City, USA. At a young age, DeLuna and her family moved to the Dominican Republic. When she was 12, DeLuna performed onstage and was heard by Milly Quezada who commended her vocals. Friends and family recognized her talent at an early age, but it was not until she moved back to the United States at age 14, to Newark, New Jersey, that DeLuna realized her potential as a singer. She attended Benjamin Franklin Elementary in Newark, and was taught by Nicholas Straus. DeLuna then attended the Newark Arts High School, which was the only school she applied to. While there, DeLuna and her friends formed an R&B group called Coquette. DeLuna had a tough upbringing and was raised in poverty. She spent her time listening to Aretha Franklin and Billie Holiday records, which she imitated daily on her karaoke machine.