CFR means Code of federal regulation: 21 is nothing but the title name it comes from…
US government is a federal government , in this it is having the some of regulations. For those it gives the numbering.those are 1-50 titles.
In that the 21 title name is FOOD and DRUGS.
It is also known as USFDA. And It is having
3 chapters,9 volumes and 1-1499 parts.
In that part 211 is for GMP for finished pharmaceuticals.
If you want to know more,you can see the e-CFR.
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