If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/418/501/product-dating-information-06-25-mk.pdf
H8000
L-Histidine
≥99% (TLC), ReagentPlus®
Synonym(s):
(S)-2-Amino-3-(4-imidazolyl)propionic acid, NSC 137773
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Product Name
L-Histidine, ReagentPlus®, ≥99% (TLC)
InChI
1S/C6H9N3O2/c7-5(6(10)11)1-4-2-8-3-9-4/h2-3,5H,1,7H2,(H,8,9)(H,10,11)/t5-/m0/s1
SMILES string
N[C@@H](Cc1c[nH]cn1)C(O)=O
InChI key
HNDVDQJCIGZPNO-YFKPBYRVSA-N
product line
ReagentPlus®
assay
≥99% (TLC)
form
powder
color
white to off-white
mp
282 °C (dec.) (lit.)
solubility
0.5 M HCl: 50 mg/mL
application(s)
cell analysis
Quality Level
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This Item | 53319 | H6034 | H3751 |
|---|---|---|---|
| form powder | form powder or crystals | form powder | form powder |
| assay ≥99% (TLC) | assay ≥99.5% (NT) | assay 98.5-101.0% | assay ≥98% (TLC) |
| product line ReagentPlus® | product line BioUltra | product line - | product line - |
| mp 282 °C (dec.) (lit.) | mp 282 °C (dec.) (lit.), ~285 °C (dec.) | mp 282 °C (dec.) (lit.) | mp 280 °C |
| solubility 0.5 M HCl: 50 mg/mL | solubility H2O: 0.1 M at 20 °C, clear, colorless | solubility H2O: 50 mg/mL | solubility 1 M HCl: soluble |
| color white to off-white | color white | color white to off-white | color white |
Application
Biochem/physiol Actions
Legal Information
Storage Class
11 - Combustible Solids
wgk
WGK 1
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Gloves, type N95 (US)
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How can I determine the shelf life / expiration / retest date of this product?
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How is shipping temperature determined? And how is it related to the product storage temperature?
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Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf
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What is the solubility of L-Histidine (H8000) in water?
1 answer-
L-Histidine is fairly soluble in water but insoluble in alcohol and ether. It decomposes at a temperature of 251-252 °C. When dissolved in water, a clear solution can be achieved at a concentration of 50 mg/ml with 0.5 M hydrochloric acid.
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