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53370

Sigma-Aldrich

L-组氨酸 单盐酸盐 一水合物

≥99.0% (AT)

同義詞:

L-α-氨基-β-(4-咪唑基)丙酸 单盐酸盐

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About This Item

經驗公式(希爾表示法):
C6H9N3O2 · HCl · H2O
CAS號碼:
分子量::
209.63
Beilstein:
4168261
MDL號碼:
分類程式碼代碼:
12352209
PubChem物質ID:
NACRES:
NA.77
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品質等級

化驗

≥99.0% (AT)

形狀

solid

光學活性

[α]20/D +9.5±0.5°, c = 5% in 5 M HCl

雜質

≤0.3% foreign amino acids

mp

254 °C (dec.) (lit.)

溶解度

H2O: 1 g/10 mL, clear, colorless (hot)

負離子痕跡

sulfate (SO42-): ≤100 mg/kg

正離子痕跡

Ca: ≤10 mg/kg
Cd: ≤5 mg/kg
Co: ≤5 mg/kg
Cr: ≤5 mg/kg
Cu: ≤5 mg/kg
Fe: ≤5 mg/kg
K: ≤50 mg/kg
Mg: ≤5 mg/kg
Mn: ≤5 mg/kg
NH4+: ≤500 mg/kg
Na: ≤50 mg/kg
Ni: ≤5 mg/kg
Pb: ≤5 mg/kg
Zn: ≤5 mg/kg

SMILES 字串

O.Cl.N[C@@H](Cc1c[nH]cn1)C(O)=O

InChI

1S/C6H9N3O2.ClH.H2O/c7-5(6(10)11)1-4-2-8-3-9-4;;/h2-3,5H,1,7H2,(H,8,9)(H,10,11);1H;1H2/t5-;;/m0../s1

InChI 密鑰

CMXXUDSWGMGYLZ-XRIGFGBMSA-N

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一般說明

L-组氨酸是一种亲水性必需氨基酸,其具有含有咪唑基的碱性侧链。

生化/生理作用

L-组氨酸可由ATP、5-磷酸核糖-1-焦磷酸(PRPP)和谷氨酰胺生物合成。这种必需氨基酸可被组氨酸酶、尿苷酶和咪唑酮丙酸酶降解为谷氨酸[1][2];它也是组氨酸脱羧酶作用的组胺前体。

儲存類別代碼

11 - Combustible Solids

水污染物質分類(WGK)

WGK 1

閃點(°F)

Not applicable

閃點(°C)

Not applicable

個人防護裝備

Eyeshields, Gloves, type N95 (US)


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分析證明 (COA)

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Biochemistry, 3rd. ed. (New York, NY)
Stryer, L., W.H. Freeman
Biochemistry (3rd Edition), 19-20 (1988)
Textbook of Biochemistry with Clinical Correlations, 5th ed. (New York, NY)
Devlin, T. M., ed., Wiley-Liss
Biochemistry (5th Edition), 97-97 (2002)
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Elucidating how a population of non-growing bacteria generates mutations improves our understanding of phenomena like antibiotic resistance, bacterial pathogenesis, genetic diversity and evolution. To evaluate mutations that occur in nutritionally stressed non-growing bacteria, we have employed the strain B. subtilis
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The effect of reserpine on histamine (HA) and tele-methylhistamine (N(τ)-MHA) in hypothalamus and cortex of rats was analyzed and compared to catecholamines. IP injection of reserpine (5 mg/kg) confirmed the effectiveness of reserpine treatment on noradrenaline and dopamine levels. Our in-vitro

Questions

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  1. How can I determine the shelf life / expiration / retest date of this product?

    1 answer
    1. 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/449/386/product-dating-information-mk.pdf

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  2. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer
    1. 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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