Impurity Reference Standard - Products

Histidine

CAT No: CL-HTN-01 CAS No: 71-00-1 Mol Wt: 155.2 Mol F: C6H9N3O2 Inv Status: Custom Synthesis

Chemical Name: (2S)-2-Amino-3-(1H-imidazol-4-yl)propanoic acid

Histidine EP Impurity A

CAT No: CL-HTN-02 CAS No: 60-18-4 Mol Wt: 181.2 Mol F: C9H11NO3 Inv Status: Custom Synthesis

Chemical Name: (2S)-2-Amino-3-(4-hydroxyphenyl)propanoic acid

Histidine Impurity 1

CAT No: CL-HTN-03 CAS No: 2580100-34-9 Mol Wt: 171.2 : 36.5 Mol F: C6H9N3O3 : HCl Inv Status: Custom Synthesis

Chemical Name: (S)-2-Amino-3-(2-oxo-2,3-dihydro-1H-imidazol-4-yl)propanoic acid hydrochloride

Histidine Impurity 2

CAT No: CL-HTN-04 CAS No: 2679858-41-2 Mol Wt: 393.4 Mol F: C21H19N3O5 Inv Status: Custom Synthesis

Chemical Name: (S)-2-((((9H-Fluoren-9-yl)methoxy)carbonyl)amino)-3-(2-oxo-2,3-dihydro-1H-imidazol-4-yl)propanoic acid

Histidine Impurity 3

CAT No: CL-HTN-05 CAS No: 2770429-63-3 Mol Wt: 240.3 Mol F: C10H16N4O3 Inv Status: Custom Synthesis

Chemical Name: (S)-2-(2-Amino-3-(1H-imidazol-5-yl)propanamido)-2-methylpropanoic acid

Histidine Impurity 4

CAT No: CL-HTN-06 CAS No: Mol Wt: 592.7 Mol F: C27H40N6O9 Inv Status: Custom Synthesis

Chemical Name: Na-(Na,Nt-bis(tert-butoxycarbonyl)-D-histidyl)-Nt-(tert-butoxycarbonyl)-D-histidine

2-Oxohistidine

CAT No: CL-HTN-07 CAS No: 265997-48-6 Mol Wt: 169.1 Mol F: C6H7N3O3 Inv Status: Custom Synthesis

Chemical Name: (S)-2-amino-3-(2-oxo-2H-imidazol-4-yl)propanoic acid