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53370

Sigma-Aldrich

L-Histidina

≥99.0% (AT)

Sinônimo(s):

Ácido L-α-amino-β-(4-imidazolil)propiônico

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25 G
R$ 291,00
100 G
R$ 810,00
500 G
R$ 2.843,00

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25 G
R$ 291,00
100 G
R$ 810,00
500 G
R$ 2.843,00

About This Item

Fórmula empírica (Notação de Hill):
C6H9N3O2 · HCl · H2O
Número CAS:
Peso molecular:
209.63
Beilstein:
4168261
Número MDL:
Código UNSPSC:
12352209
ID de substância PubChem:
NACRES:
NA.77

R$ 291,00


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Nível de qualidade

Ensaio

≥99.0% (AT)

Formulário

solid

atividade óptica

[α]20/D +9.5±0.5°, c = 5% in 5 M HCl

Impurezas

≤0.3% foreign amino acids

pf

254 °C (dec.) (lit.)

solubilidade

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

traços de ânion

sulfate (SO42-): ≤100 mg/kg

traços de cátion

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

cadeia de caracteres SMILES

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

chave InChI

CMXXUDSWGMGYLZ-XRIGFGBMSA-N

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Descrição geral

L-Histidine is a hydrophilic essential amino acid that has a basic sidechain containing an imidazole group.

Ações bioquímicas/fisiológicas

L-Histidine is biosynthesized from ATP, 5-phosphoribosyl-1-pyrophosphate (PRPP), and glutamine. This essential amino acid can be degraded to glutamate by histidiase, urocanase and imidazolonepropionase[1][2]; it is also the precursor of histamine by action of histidine decarboxylase.

Código de classe de armazenamento

11 - Combustible Solids

Classe de risco de água (WGK)

WGK 1

Ponto de fulgor (°F)

Not applicable

Ponto de fulgor (°C)

Not applicable

Equipamento de proteção individual

Eyeshields, Gloves, type N95 (US)


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Questions

1–2 of 2 Questions  
  1. 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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  2. 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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