N-Acetyl-L-histidin CAS NO.2497-02-1

Product name	N-Acetyl-L-histidine
Synonyms	(2S)-2-acetamido-3-(1H-imidazol-5-yl)propanoate;AC-HIS-OH H2O;ACETYL-L-HISTIDINE H2O;ACETYL-L-HISTIDINE MONOHYDRATE;N-ALPHA-ACETYL-L-HISTIDINE H2O;N-ALPHA-ACETYL-L-HISTIDINE HYDRATE;N-ALPHA-ACETYL-L-HISTIDINE MONOHYDRATE;N-ACETYL-L-HISTIDINE
Cas	2497-02-1
MF	C8H11N3O3
MW	197.19
EINECS	219-678-6

Item	Standard	Test Results
Identification	A.H-NMR:Comply with the structure	Complies
	B.LC-MS:Comply with the structure	Complies
	C.The IR spectrum of sample should be identical with that of reference standard;	Complies
	D.HPLC-ESI-MS The retention time of the major peak in the chromatogram of the Assay preparation corresponds to that in the chromatogram of the Standard preparation, as obtained in the Assay.	Complies
Crystallinity	meets the requirements.	Complies
Loss on drying	≤2.0%	0.19%
Heavy metals	≤10 ppm	<10ppm
Water	≤1.0%	0.1%
Sulphated ash	≤0.5%, determined on 1.0 g.	0.009%
Related substances	Unspecified impurities: for each impurity ≤0.10%	<0.10%
Related substances	Total Impurity ≤0.5%	0.18%
Purity	≥99.0%	99.7%
Assay	99.0%~101.0% (anhydrous substance).	99.8%
Storage	Preserve in well-closed, light-resistant and airtight containers.	Complies