Is there a city of Cairo in ancient Egypt? When was Cairo established and became the capital of Egypt?

In 332 BC, under the rule of Alexander I, king of Macedon, Greece, the city was established and named the capital after him. Later, it became the capital of Ptolemy dynasty in Egypt from 305 BC to the first 30 years. At that time, it was the trade and cultural exchange center of Mediterranean and eastern countries, attracting businessmen from all over the world.