Skip to Content
Merck
All Photos(5)

Key Documents

View All Documentation

A7002

Sigma-Aldrich

Agar

ash 2.0-4.5%

Synonym(s):

Agar-agar, Gum agar

Sign Into View Organizational & Contract Pricing
All Photos(5)

About This Item

Linear Formula:
(C12H18O9)n
CAS Number:
9002-18-0
EC Number:
232-658-1
MDL number:
MFCD00081288
UNSPSC Code:
50405901
eCl@ss:
42040102
NACRES:
NB.22
Pricing and availability is not currently available.

biological source

algae (Rhodophyceae)

Quality Level

200

form

flakes
powder or crystals

technique(s)

tissue culture: suitable

ash

2.0-4.5%

gel strength

600-1200 g/cm2 (1.5%, 20 oC)

SMILES string

O1[C@@H]([C@@H]([C@@H]([C@H](C1OC2[C@H]3OCC2OC([C@H]3O)C)O)OC)O)CO

InChI

1S/C14H24O9/c1-5-8(16)13-11(7(21-5)4-20-13)23-14-10(18)12(19-2)9(17)6(3-15)22-14/h5-18H,3-4H2,1-2H3/t5?,6-,7?,8-,9+,10-,11?,12+,13+,14?/m1/s1

InChI key

GYYDPBCUIJTIBM-DYOGSRDZSA-N

Looking for similar products? Visit Product Comparison Guide

General description

Agar is a polysaccharide consisting of β- D-galactopyranosyl and 3,6-anhydro-α-L- galactopyranosyl units. Depending on the source agar exists as various substituted forms such as methyl and sulphate ether.[1] It is a linear galactan polysaccharide isolated from the cell wall of Rhodophyceae class of seaweeds.[2]

Application

Agar has been used:
  • as a component of solid N6 complete medium[3]
  • in modified Murashige and Skoog (MS) medium for culturing germinating lentil and faba bean seeds[4] and in the regeneration of transgenic cauliflower and broccoli explants[5]
  • as a component of agar mixture to simulate a vascular phantom in carotid vessel[6]

Biochem/physiol Actions

Agar exists in left-handed helical conformation and aggregation of hexagonal fibers leads to gel formation. The hydrophobicity of the disaccharides determines its gelling property and solubility.[7] Agar is a major component of the microbial solid medium. It has applications in tissue engineering, pharmaceutics and in cell encapsulation.[8]

Storage Class Code

11 - Combustible Solids

WGK

WGK 1

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number
BCCL6847
BCCM5289
BCCL2620
BCCK6438
BCCK3375

Don't see the Right Version?

If you require a particular version, you can look up a specific certificate by the Lot or Batch number.

Search for a COA

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Customers Also Viewed

Slide 1 of 3

1 of 3

Bacteriological agar for molecular biology

Sigma-Aldrich

A5306

Bacteriological agar

Select agar

Sigma-Aldrich

A5054

Select agar

Agar suitable for microbiology

Millipore

05039

Agar

Chemical structure and physico-chemical properties of agar
International Workshop on Gelidium, 21(11), 137-148 (1991)
A Method for Radioactive labelling of Hebeloma cylindrosporum to study plant-fungus interactions
Becquer A, et al.
Bio-protocol, 7(20), 550-554 (2017)
Recovery of phenotypically normal transgenic plants of Brassica oleracea upon Agrobacterium rhizogenes-mediated co-transformation and selection of transformed hairy roots by GUS assay
Puddephat IJ, et al.
Molecular breeding : new strategies in plant improvement, 7(3), 229-242 (2001)
Plant growth regulators improve in vitro flowering and rapid generation advancement in lentil and faba bean
Mobini SH, et al.
In Vitro Cellular & Developmental Biology, 51(1), 71-79 (2015)
Physical and chemical characterization of agar polysaccharides extracted from the Thai and Japanese species of Gracilaria
Praiboon J, et al.
ScienceAsia, 32(1), 11-17 null
View All Related Papers

Questions

1–2 of 2 Questions  

  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

      Helpful?

  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

      Helpful?

Reviews

No rating value

Active Filters

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service