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Clearsynth is a leading innovator in pharmaceutical reference standards, offering high-quality Reference Standards for Histidine, including both pharmacopeial and non-pharmacopeial impurities, metabolites, stable isotope products, and nitrosamines (N-NO products). Our Histidine impurity reference standards are invaluable for pharmaceutical research, supporting product development, ANDA and DMF submissions, quality control (QC), method validation, and stability studies. They also aid in identifying unknown impurities and assessing genotoxic potential.
Our Histidine-related products undergo thorough characterization and are supplied with detailed Certificates of Analysis (COA) and analytical data that meet regulatory requirements. All supplied products are re-tested at regular intervals to ensure ongoing quality and compliance.

Histidine Related Compounds

Stable Isotopes

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
L-Histidine Hydrochloride Hydrate (13C6,15N3) Stable Isotopes CS-T-103152 202468-43-7 Enquire
L-Histidine Hydrochloride Hydrate 13C6 Stable Isotopes CS-T-96308 201740-88-7 Enquire
N,N-Dimethyl-L-histidine-d6 Methyl Ester Dihydrochloride Stable Isotopes CS-T-96970 Not Available Enquire
Nα-Fmoc-L-histidine-1-15N Stable Isotopes CS-T-96957 Not Available Enquire
Nα-Fmoc-L-histidine-3-15N Stable Isotopes CS-T-96956 Not Available Enquire
rac Histidine-13C6,15N3 Stable Isotopes CS-T-96939 Not Available Enquire


API

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Histidine mono Hydrochloride API CS-O-01613 645-35-2 In Stock
L-Histidine mono Hydrochloride API CS-O-30629 5934-29-2 In Stock
DL-Histidine API CS-DE-00107 4998-57-6 Enquire
Fructose-histidine API CS-T-74271 25020-13-7 Enquire


Impurity

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
1-Methyl-L-histidine Impurity CS-T-33970 332-80-9 In Stock
2-Oxo Histidine Impurity CS-O-44620 151436-49-6 Enquire
L-Histidine N-oxide Impurity CS-O-56192 ---- Enquire
L-Histidine Benzyl Ester Impurity CS-T-26320 46921-20-4 Enquire
Na-Boc-L-histidine Impurity CS-T-07575 17791-52-5 Enquire
N-Fmoc-1-trityl L-Homohistidine Impurity CS-T-74645 1324564-23-9 Enquire


Fine Chemicals

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
L-Histidine Fine Chemicals CS-T-26321 71-00-1 In Stock
Nt-(tert-butoxycarbonyl)-L-histidine Fine Chemicals CS-O-49863 46924-53-2 Enquire


Nitrosamine

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
1-Nitroso-L-histidine Nitrosamine CS-O-46161 932446-62-3 Enquire
N-nitroso Histidine Nitrosamine CS-O-39121 ---- Enquire


Stable Isotope Reagent

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
L-Histidine-13C6 Stable Isotope Reagent CS-CH-00096 55443-59-9 Enquire
L-Histidine-13C6, A-Amine-15N Stable Isotope Reagent CS-CH-00097 620973-21-9 Enquire
L-Histidine-15N3 Stable Isotope Reagent CS-CH-00099 1217456-12-6 Enquire
L-Histidine-Amine-15N Stable Isotope Reagent CS-CH-00100 1202062-94-9 Enquire


Building Blocks

COMPOUND CATEGORY CAT. No. CAS. No. STOCK STATUS
Na-Boc-D-histidine Building Blocks CS-T-07574 50654-94-9 Enquire