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Merck

C8667

Sigma-Aldrich

Colesterol

Cholesterol
1 of 1 reviewers received a sample product or took part in a promotion

Sigma Grade, ≥99%

Sinónimos:

3β-Hidroxi-5-colesteno, 5-Colesten-3β-ol

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About This Item

Fórmula empírica (notación de Hill):
C27H46O
Número de CAS:
Peso molecular:
386.65
Beilstein:
1915888
Número CE:
Número MDL:
Código UNSPSC:
12352111
eCl@ss:
39023139
ID de la sustancia en PubChem:
NACRES:
NA.77
En este momento no podemos mostrarle ni los precios ni la disponibilidad

origen biológico

sheep wool

Nivel de calidad

grado

Sigma Grade

Ensayo

≥99%

Formulario

powder

bp

360 °C (lit.)

mp

147-149 °C (lit.)

solubilidad

water: soluble 0.00003 g/L at 20 °C

densidad

1.067 g/mL at 25 °C (lit.)

Condiciones de envío

ambient

temp. de almacenamiento

−20°C

cadena SMILES

CC(C)CCC[C@@H](C)[C@H]1CC[C@H]2[C@@H]3CC=C4C[C@@H](O)CC[C@]4(C)[C@H]3CC[C@]12C

InChI

1S/C27H46O/c1-18(2)7-6-8-19(3)23-11-12-24-22-10-9-20-17-21(28)13-15-26(20,4)25(22)14-16-27(23,24)5/h9,18-19,21-25,28H,6-8,10-17H2,1-5H3/t19-,21+,22+,23-,24+,25+,26+,27-/m1/s1

Clave InChI

HVYWMOMLDIMFJA-DPAQBDIFSA-N

Información sobre el gen

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Categorías relacionadas

Aplicación

El colesterol se utilizó para preparar complejos inmunoestimulantes para intensificar las respuestas celular y humoral.[1] Se incorporó en el pienso animal para estudiar el efecto de las dietas ricas en colesterol.[2][3]
Patrón para cromatografía

Acciones bioquímicas o fisiológicas

Componente principal de todas las membranas biológicas; ~ el 25 % de todos los lípidos cerebrales es colesterol.
El colesterol es un lípido que constituye hasta el 20-25% de los componentes estructurales de las membranas celulares. Determina la fluidez y la permeabilidad de la membrana, haciéndola permeable al agua pero no a los iones ni a los protones. El colesterol también regula las funciones de las proteínas transportadoras y de comunicación presentes en las membranas plasmáticas.[4] Las principales lugares de síntesis del colesterol son el intestino delgado y el hígado.[5]

Nota de preparación

El monohidratado de colesterol produce una disolución transparente, de incolora a amarillo pálido en alcohol caliente. También es soluble en acetona, dioxano, acetato de etilo, benceno, éter de petróleo (bencina), aceites y grasas, y en disoluciones acuosas de sales biliares. Las disoluciones deben estar protegidas de la luz.

Producto relacionado

Referencia del producto
Descripción
Precios

también adquirido normalmente con este producto

Código de clase de almacenamiento

11 - Combustible Solids

Clase de riesgo para el agua (WGK)

WGK 1

Punto de inflamabilidad (°F)

Not applicable

Punto de inflamabilidad (°C)

Not applicable

Equipo de protección personal

Eyeshields, Gloves, type N95 (US)


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Certificados de análisis (COA)

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Questions

1–4 of 4 Questions  
  1. Buongiorno, volevo chiedere cortesemente quale sia l'origine del prodotto

    1 answer
    1. This product is derived from sheep wool. The origin information of this product will be listed on the lot-specific Certificate of Origin. Please navigate to the ‘DOCUMENTATION’ section of the Product Detail Page to access a Certificate under the ‘Certificate of Origin’ tab:
      https://www.sigmaaldrich.com/product/sigma/c8667#product-documentation

      Helpful?

  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

      Helpful?

  3. 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

      Helpful?

  4. Hi, I want to know if this is from plant or sheep wool?

    1 answer
    1. As mentioned in the PROPERTIES section of the product page, this material is from sheep wool.

      Helpful?

Reviews

1 of 1 reviewers received a sample product or took part in a promotion

Active Filters

    • Review 1
    • Vote 1
    3 out of 5 stars.

    Cholesterol

    Used as standard for TLC, worked OK, stainned less than other lipids with iodine, but that may be be normal

    Helpful?

    1. Response from MilliporeSigma:

      Thank you for taking the time to leave a review! We would like to learn more about your experience to see if there is anything we can do to help correct this issue. When you have a moment, please contact us by visiting https://www.sigmaaldrich.com/support/customer-support and submit a Product Technical Inquiry. We look forward to hearing from you soon!

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