List of file formats
This is a list of file formats used by computers, organized by type. Filename extensions are usually noted in parentheses if they differ from the format name or abbreviation. Many operating systems do not limit filenames to a single extension shorter than 4 characters, as was common with some operating systems that supported the FAT file system. Examples of operating systems that do not impose this limit include Unix-like systems. Also, Microsoft Windows NT, 95, 98, and Me do not have a three character limit on extensions for 32-bit or 64-bit applications on file systems other than pre-Windows 95/Windows NT 3.5 versions of the FAT file system. Some filenames are given extensions longer than three characters.
Some file formats may be listed twice or more. An example is the .b file.
Archive and compressed
GRF
GRF may refer to:
Sermorelin
Sermorelin (INN) (trade name is Geref), also known as GHRH (1-29), is a growth hormone-releasing hormone (GHRH) analogue used as a diagnostic agent. It is a 29-amino acid polypeptide representing the 1–29 fragment from endogenous human GHRH, and is thought to be the shortest fully functional fragment of GHRH. It is used as a diagnostic agent to assess growth hormone (GH) secretion. It is also used as doping agent in sports due to its correlation with increased growth of muscular and skeletal tissue. Sermorelin use is also hypothesized to improve deep rapid eye movement sleep.
