Fluoroform is the chemical compound with the formula CHF3.
In Belgium, the motorways (autosnelwegen; autoroutes; Autobahnen) are indicated by an A and an E(uropean) number.
R-phrases (short for risk phrases) are defined in Annex III of European Union Directive 67/548/EEC: Nature of special risks attributed to dangerous substances and preparations.
The Vympel R-23 (NATO reporting name AA-7 Apex) is a medium-range air-to-air missile developed by Vympel in the Soviet Union for fighter aircraft.
The R23 is a provincial route in South Africa that links Benoni with Volksrust via Brakpan, Heidelberg and Standerton.
Russian route R23 or Pskov Highway Федера́льная автомоби́льная доро́га Р23 «Псков» is a Russian federal motorway that runs from St.Petersburg through Pskov until the border with Belarus.
The Renault R23 is a Formula One car that competed in the 2003 Formula One season.
The Rikhter R-23 is an aircraft autocannon developed for the Soviet Air Force starting in the late 1950s.
The 23 class were rigid airships produced in the United Kingdom during the First World War.