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N-Acetyl-L-histidine monohydrate (NAH) is a histidine derivative and a prominent biomolecule found in the brain, retina, and lens of poikilothermic (cold-blooded) vertebrates. It functions as an essential animal metabolite and serves as a major osmolyte in the brain and ocular tissues of teleost fish, amphibians, and reptiles. Unlike poikilotherms, homeothermic (endothermic) vertebrates exhibit significantly lower levels of NAH in the brain and other tissues, highlighting its unique phylogenetic distribution and specialized physiological role in evolutionary biology and vertebrate homeostasis.

| Pack Size | Price | USA Stock | Global Stock | Quantity |
|---|---|---|---|---|
| 1 g | $29 | - | In Stock | |
| 5 g | $81 | - | In Stock | |
| 10 g | $118 | - | In Stock | |
| 1 mL x 10 mM (in DMSO) | $29 | - | In Stock |
| Description | N-Acetyl-L-histidine monohydrate (NAH) is a histidine derivative and a prominent biomolecule found in the brain, retina, and lens of poikilothermic (cold-blooded) vertebrates. It functions as an essential animal metabolite and serves as a major osmolyte in the brain and ocular tissues of teleost fish, amphibians, and reptiles. Unlike poikilotherms, homeothermic (endothermic) vertebrates exhibit significantly lower levels of NAH in the brain and other tissues, highlighting its unique phylogenetic distribution and specialized physiological role in evolutionary biology and vertebrate homeostasis. |
| In vitro | N-Acetyl-L-histidine monohydrate is a key osmolyte in the brain and eyes of fish, amphibians, and reptiles, regulating cell volume and intraocular pressure. Its scarcity in homeotherms makes it a valuable probe for studying vertebrate thermal adaptation and brain metabolism evolution [1]. |
| Molecular Weight | 215.21 |
| Formula | C8H13N3O4 |
| Cas No. | 39145-52-3 |
| Smiles | [C@@H](CC1=CN=CN1)(NC(C)=O)C(O)=O.O |
| Storage | Powder: -20°C for 3 years | In solvent: -80°C for 1 year Shipping with blue ice/Shipping at ambient temperature. | ||||||||||||||||||||||||||||||||||||||||
| Solubility Information | DMSO: 16 mg/mL (74.35 mM), Sonication is recommended. H2O: 50 mg/mL (232.33 mM), Sonication is recommended. | ||||||||||||||||||||||||||||||||||||||||
Solution Preparation Table | |||||||||||||||||||||||||||||||||||||||||
DMSO/H2O
H2O
Note : The dilution table applies only to solid products. For liquid products, please calculate the stock solution based on the stated concentration and/or density. | |||||||||||||||||||||||||||||||||||||||||
Dissolve 2 mg of the compound in 100 μL DMSO
to obtain a stock solution at a concentration of 20 mg/mL . If the required concentration exceeds the compound's known solubility, please contact us for technical support before proceeding.
1) Add 100 μL of the DMSO
stock solution to 400 μL PEG300
and mix thoroughly until the solution becomes clear.
2) Add 50 μL Tween 80 and mix well until fully clarified.
3) Add 450 μL Saline,PBS or ddH2O
and mix thoroughly until a homogeneous solution is obtained.
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