Latin Capital Letter U With Hook Above
HTML Entity Browser Test:

U+1EE6 is the Unicode hex value of the character Latin Capital Letter U With Hook Above, which is categorized as "uppercase letter" in the Unicode 6.0 character table.

In addition, U+1EE6 is a composite character comprising of one or more other Unicode characters modified or combined.

Unicode Character Information
Unicode Hex U+1EE6
General Category Uppercase Letter [Code: Lu]
Canonical Combining Class 0
Bidirectional Category L
Decomposition Mapping 0055 0309
Mirrored N
Lowercase Version U+1EE7
Unicode Character Encodings
Latin Capital Letter U With Hook Above HTML Entity Ủ (decimal entity), Ủ (hex entity)
Windows Key Code Alt 7910 or Alt +1EE61
Programming Source Code Encodings Python hex: u"\u1EE6", Hex for C++ and Java: "\u1EE6"
UTF-8 Hexadecimal Encoding 0xE1BBA6
1 To type a Unicode symbol in Windows, hold down the ALT key and enter the decimal or hexadecimal code provided using the numeric keypad. The decimal alt code (Alt 7910) will only work on computers with support for this Unicode character in the active code page. The hexadecimal alt code (Alt +1EE6) will work for all Unicode characters provided Hex input from the numeric keypad is enabled.
* If the Latin Capital Letter U With Hook Above character does not display correctly in your browser, you may not have a Unicode font on your system that supports this particular symbol.