Category
Folic Acid
CAS Number
Folic acid STD - 59-30-3 : IMP - C - 47707-78-8 : IMP - E - 1391068-26-0 : IMP - G - 2734707-85-6 : IMP - H - 2366274-27-1;
Molecular Formula
Folic acid STD - C19H19N7O6 : IMP - C - C19H19N7O6: IMP - E - C26H24N12O7 : IMP - G - C19H19N7O6 : IMP - H - C31H31N9O10 ;
Molecular Weight
Folic acid STD - 441.40 g/mol : IMP - C - 441.4 g/mol : IMP - E - 616.54 g/mol : IMP - G - 441.4 : IMP - H - 689.6 g/mol ;
Synonym

 Folic acid - Pteroyl-L-glutamic Acid; Pteroyl-L-monoglutamic Acid; Pteroylglutamic Acid; Pteroylmonoglutamic Acid; N-[4-[[(2-Amino-3,4-dihydro-4-oxo-6-pteridinyl)methyl]amino]benzoyl]-L-glutamic Acid; (2S)-2-[(4-[[(2-Amino-4-hydroxypteridin-6-yl)methyl]amino]phenyl)formamido]pentanedioic Acid; (2S)-2-[[4-[(2-Amino-4-oxo-1H-pteridin-6-yl)methylamino]benzoyl]amino]pentanedioic Acid;

Folic acid EP Impurity C - (2S)-2-[4-[[(2-Amino-4-oxo-1,4-dihydropteridin-7-yl)methyl]amino]benzamido]pentanedioic acid ; Isofolic acid ; (S)-2-(4-(((2-Amino-4-oxo-1,4-dihydropteridin-7-yl)methyl)amino)benzamido)pentanedioic Acid;

Folic acid EP Impurity E - (2S)-2-[4-[bis[(2-amino-4-oxo-1,4-dihydropteridin-6-yl)-methyl]amino]benzamido]pentanedioic acid ; (6-pterinylfolic acid) ; (2S)-2-[[4-[Bis[(2-amino-4-oxo-1,4-dihydropteridin-6-yl)methyl]amino]benzoyl]amino]pentanedioic Acid ;

Folic acid EP Impurity G - (2S)-[4-[(2-amino-7-methyl-4-oxo-1,4-dihydropteridin-6-yl)amino]benzamido]pentanedioic acid ;  N-[4-[(2-Amino-7-methyl-4-oxo-1, 4-dihydropteridin-6-yl)amino]benzoyl]-L-glutamic Acid:

Folic acid EP Impurity H - (2S)-2-[4-[(4S)-4-[4-[[(2-amino-4-oxo-1,4-dihydropteridin-6-yl)methyl]amino]benzamido]-4-carboxybutanamido]benzamido]pentanedioic acid ; (4-((S)-4-(4-(((2-Amino-4-oxo-1,4-dihydropteridin-6-yl)methyl)amino)benzamido)-4-carboxybutanamido)benzoyl)-L-glutamic Acid ; 

Folic acid is used as a system suitability Chemical Reference Standard (CRS) to ensure the accuracy and reliability of analytical methods in pharmaceutical quality control. It helps verify method performance, including precision and reproducibility, in techniques such as HPLC and UV spectroscopy.