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50940

Sigma-Aldrich

Guanidine hydrochloride

≥99.0% (AT)

Synonym(s):

Aminoformamidine hydrochloride, Aminomethanamidine hydrochloride, Guanidinium chloride

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About This Item

Linear Formula:
NH2C(=NH)NH2 · HCl
CAS Number:
Molecular Weight:
95.53
Beilstein:
3591990
EC Number:
MDL number:
UNSPSC Code:
12352107
PubChem Substance ID:
NACRES:
NA.55

Quality Level

Assay

≥99.0% (AT)

form

solid

ign. residue

≤0.1% (as SO4)

pH

(25 °C, 4.6 - 6/573 g/L)

mp

180-185 °C (lit.)

solubility

H2O: 6 M at 20 °C, clear, colorless

density

1.3 g/cm3 (lit.)

anion traces

sulfate (SO42-): ≤50 mg/kg

cation traces

Ca: ≤20 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
Na: ≤50 mg/kg
Ni: ≤5 mg/kg
Pb: ≤5 mg/kg
Zn: ≤5 mg/kg

SMILES string

Cl[H].NC(N)=N

InChI

1S/CH5N3.ClH/c2-1(3)4;/h(H5,2,3,4);1H

InChI key

PJJJBBJSCAKJQF-UHFFFAOYSA-N

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Application

Strong chaotropic agent useful for the denaturation and subsequent refolding of proteins. This strong denaturant can solubilize insoluble or denatured proteins such as inclusion bodies. This can be used as the first step in refolding proteins or enzymes into their active form. Urea and dithiothreitol (DTT) may also be necessary.

Pictograms

Exclamation mark

Signal Word

Warning

Hazard Statements

Hazard Classifications

Acute Tox. 4 Inhalation - Acute Tox. 4 Oral - Eye Irrit. 2 - Skin Irrit. 2

Storage Class Code

11 - Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Manula S B Rathnayake et al.
Cartilage, 13(2_suppl), 476S-485S (2021-03-23)
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D T Gruszka et al.
Science advances, 6(38) (2020-09-20)
During replication, nucleosomes are disrupted ahead of the replication fork, followed by their reassembly on daughter strands from the pool of recycled parental and new histones. However, because no previous studies have managed to capture the moment that replication forks
Fackson Mwale et al.
Tissue engineering. Part A, 20(21-22), 2942-2949 (2014-05-03)
Link N is a naturally occurring peptide that can stimulate proteoglycan synthesis in intervertebral disc (IVD) cells. IVD repair can also potentially be enhanced by mesenchymal stem cell (MSC) supplementation to maximize extracellular matrix (ECM) production. In a previous study
Caitriona McKeever et al.
Journal of medicinal chemistry, 56(3), 700-711 (2013-01-11)
Considering the strong DNA minor groove binding observed for our previous series of diaromatic symmetric and asymmetric guanidinium and 2-aminoimidazolinium derivatives, we report now the synthesis of new aminoalkyl derivatives of diaromatic guanidines with potential as DNA minor groove binders
Masaatsu Adachi et al.
The Journal of organic chemistry, 78(4), 1699-1705 (2013-01-18)
We describe an improved synthesis of (-)-5,11-dideoxytetrodotoxin from an enone, which was used for synthesis of tetrodotoxin and its analogues in this laboratory. One of the major modifications was to establish a two-step guanidinylation of trichloroacetamide of a highly functionalized

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