U4, U-4, or U04 may refer to:

Science and technology

U4 spliceosomal RNA The U4 small nuclear Ribo-Nucleic Acid (U4 snRNA) is a non-coding RNA component of the major or U2-dependent spliceosome – a eukaryotic molecular machine involved in the splicing of pre-messenger RNA (pre-mRNA). It forms a duplex with U6, an ...

, a non-coding RNA component of the major U2-dependent spliceosome * Haplogroup U4 (mtDNA), a human genetic group * U4, unitary group of degree 4 *

U-47700 U-47700, also known as U4, pink heroin, pinky, and pink, is an opioid analgesic drug developed by a team at Upjohn in the 1970s which has around 7.5 times the potency of morphine in animal models. U-47700 is a structural isomer of the earlier o ...

, a synthetic opioid * U04, the

ICD-10 ICD-10 is the 10th revision of the International Statistical Classification of Diseases and Related Health Problems (ICD), a medical classification list by the World Health Organization (WHO). It contains codes for diseases, signs and symptoms, ...

code for severe acute respiratory syndrome

Transport

* U-Bahn lines ** U4 (Berlin U-Bahn) **

U4 (Frankfurt U-Bahn) The U-Bahn Line B is the second line in the network of the Frankfurt U-Bahn. It leads in west–east direction from the central railway station (''Hauptbahnhof'') over the old town to Konstablerwache, where it splits into two branches to Bornheim ...

U4 (Hamburg U-Bahn) The U4 is a line of the Hamburg U-Bahn, which opened in 2012, serving 12 stations. It is the shortest line of the network, with a length of and from Jungfernstieg to Billstedt it shares tracks with the U2. Route The U4 is the newest line of the ...

U4 (Munich U-Bahn) The Munich U-Bahn (german: U-Bahn München) is an electric rail rapid transit network in Munich, Germany. The system began operation in 1971, and is operated by the municipally owned Münchner Verkehrsgesellschaft (MVG; Munich Transport Company) ...

U4 (Vienna U-Bahn) Line U4 is a line on the Vienna U-Bahn metro Metro, short for metropolitan, may refer to: Geography * Metro (city), a city in Indonesia * A metropolitan area, the populated region including and surrounding an urban center Public transpo ...

* German submarine ''U-4'', one of several German submarines * London Buses route U4 * U-4, the U.S. Air Force version of the

Aero Commander (aircraft) The Aero Commander 500 family is a series of light-twin piston-engined and turboprop aircraft originally built by the Aero Design and Engineering Company in the late 1940s, renamed the Aero Commander company in 1950, and a division of Rockwell ...

, a light twin-engined aircraft from Aero Design and Engineering Company * U-4, the Japanese air self-defense force designation for the

Gulfstream IV The Gulfstream IV (or G-IV or GIV) and derivatives are a family of twinjet aircraft, mainly for private or business use. They were designed and built by Gulfstream Aerospace, a General Dynamics company based in Savannah, Georgia, United States, ...

aircraft * U4, PMTair (former) IATA airline designator * U4, Buddha Air current IATA airline designator

Organizations

* U4, the former name of the Maple League of Universities * Anti-Corruption Resource Centre, based at the Chr. Michelsen Institute in Bergen, Norway

Other uses

* U4, an unemployment figure released by the United States Bureau of Labor Statistics * '' Ultima IV: Quest of the Avatar'', a video game

Science and technology

Transport

Organizations

Other uses

See also