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Sigma-Aldrich

PAMAM dendrimer, ethylenediamine core, generation 4.0 solution

10 wt. % in methanol

Synonym(s):

Starburst Generation 4

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About This Item

Linear Formula:
[NH2(CH2)2NH2]:(G=4);dendri PAMAM(NH2)64
CAS Number:
163442-67-9
Molecular Weight:
14214.17
MDL number:
MFCD00197936
UNSPSC Code:
12162002
NACRES:
NA.23
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description

amino surface groups

Quality Level

100

form

solution

mol wt

generation 4.0

feature

core type ethylenediamine core (2-carbon core)

concentration

10 wt. % in methanol

no. Surface Groups

64

refractive index

n20/D 1.348

bp

64.7 °C

density

0.813 g/mL at 25 °C

storage temp.

2-8°C

General description

PAMAM dendrimer, ethylenediamine core, generation 4.0 solution is a poly(amidoamine) that is categorized as a class of dendritic polymers which can be prepared by a two-step interactive reaction that forms generations around the central ethylenediamine core. It consists of nitrogen and amide as functional groups that are structured in regular “branched upon branched” pattern. It is majorly used as a high capacity chelating agent.[1][2]

Application

PAMAM dendrimer, ethylenediamine core, generation 4.0 solution is used as a compacting agent to bring in the conformational changes in the DNA molecule.[3] It can be attached on the cellulose substrate that acts as a biofunctional surface for potential applications in immonoassays.[4] It is used in MRI contrast agents[5] and in the condensation formation of silica nanospheres.[6]

Physical form

Contains 64 surface primary amino groups

Legal Information

Manufactured by Dendritech®, Inc.
Dendritech is a registered trademark of Dendritech, Inc.

Signal Word

Danger

Hazard Classifications

Acute Tox. 3 Dermal - Acute Tox. 3 Inhalation - Acute Tox. 3 Oral - Flam. Liq. 2 - STOT SE 1

Target Organs

Eyes

Storage Class Code

3 - Flammable liquids

WGK

WGK 3

Flash Point(F)

51.8 °F - closed cup

Flash Point(C)

11 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
MKCW0601
MKCV6531
MKCV1834
MKCS6102
MKCS4491

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Felipe Vidal et al.
Molecular pharmaceutics, 13(10), 3395-3403 (2016-08-25)
Polyamidoamine (PAMAM) dendrimers are hyperbranched macromolecules which have been described as one of the most promising drug nanocarrier systems. A key process to understand is their cellular internalization mechanism because of its direct influence on their intracellular distribution, association with
DNA compaction induced by a cationic polymer or surfactant impact gene expression and DNA degradation
Ainalem M, et al.
PLoS ONE, 9(3), e92692-e92692 (2014)
Rolando Alberto Rodríguez-Fonseca et al.
Colloids and surfaces. B, Biointerfaces, 177, 77-93 (2019-02-04)
Peptide epitopes have been widely used to develop synthetic vaccines and immunotherapies. However, peptide epitopes may exhibit poor absorption or immunogenicity due to their low molecular weights. Conversely, fourth-generation polyamidoamine (G4-PAMAM) dendrimers are nonimmunogenic and relatively nontoxic synthetic nanoparticles that
Marc R Knecht et al.
Langmuir : the ACS journal of surfaces and colloids, 20(11), 4728-4732 (2005-06-23)
In diatoms, silica synthesis occurs by use of complex posttranslationally modified peptides, termed silaffins, and highly complex biological polyamine structures. Silaffin peptides have lysine residues that are modified to long-chain polyamine moieties of N-methyl derivatives of polypropylenimine to drive silica
Dendritic chelating agents. 1. Cu (II) binding to ethylene diamine core poly (amidoamine) dendrimers in aqueous solutions
Diallo MS, et al.
Langmuir, 20(7), 2640-2651 (2004)
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  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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