G3272

Sigma-Aldrich

Guanidine hydrochloride

for molecular biology, ≥99%

Synonym(s):
Aminoformamidine hydrochloride, Aminomethanamidine hydrochloride, Guanidinium chloride
Linear Formula:
NH2C(=NH)NH2 · HCl
CAS Number:
Molecular Weight:
95.53
Beilstein/REAXYS Number:
3591990
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.31

biological source

synthetic (organic)

Quality Level

grade

for molecular biology

assay

≥99%

form

crystalline powder

application(s)

RNA extraction: suitable

impurities

≤0.3% water (Karl Fischer)

color

white

pH

(25 °C, 4.6 - 6/573 g/L)

mp

180-185 °C (lit.)

solubility

H2O: 6 M, clear, colorless

density

1.3 g/cm3 (lit.)

cation traces

Pb: ≤5 ppm

UV absorption

λ: 260 nm Amax: ≤0.10
λ: 290 nm Amax: ≤0.05

foreign activity

DNase, RNase, none detected

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

Guanidine hydrochloride has been used:
  • as a component of the extraction buffer for the extraction of proteoglycans
  • in extraction during protein fractionation of ATDC5 cell lines
  • as a chemical additive to study its effective absorbance spectra in structural analysis
  • to incubate the device chip to release prostate-specific antigen and for regeneration of aptamer
  • as a component of the 2,4-dinitrophenylhydrazine (DNPH) solution for detecting protein carbonyls by protein carbonylation study
  • in RNA isolation to dissociate nucleoproteins and inhibit RNase
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.

Packaging

1, 2 kg in poly bottle
100, 500 g in poly bottle

Biochem/physiol Actions

Guanidine hydrochloride (GuHCl) is a small hydroscopic molecule. It plays a role in inhibiting heat shock protein 104 (Hsp104) adenosine triphosphatase (ATPase) activity in vivo. It is a potent denaturant and inactivator of several enzymes and proteins. GuHCl can inactivate aminoacylase and papain. It is involved in unfolding and inactivation of alkaline phosphatase in Haliotis diversicolor. At higher concentrations, GuHCl is involved in virus inactivation such as Herpes simplex virus 1 (HSV-1).

Caution

May agglomerate upon storage. The quality of the product does not appear to be affected and solutions prepared from the free-flowing and lumpy guanidine hydrochloride appear identical.

Preparation Note

In order to make an 8M solution in water, one must heat the solution to 35 °C for approximately 30 minutes.
The maximum solubility of guanidine hydrochloride in water at room temperature is approximately 6M.

pictograms

Exclamation mark

signalword

Warning

hazcat

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

storage_class_code

11 - Combustible Solids

WGK Germany

WGK 1

Flash Point F

Not applicable

Flash Point C

Not applicable

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves

Certificate of Analysis

Certificate of Origin

Yang Wei et al.
Biochimica et biophysica acta, 1844(12), 2331-2337 (2014-10-14)
Conventional empirical methods for the quantification of the helical content of proteins in solution using circular dichroism (CD) primarily rely on spectral data acquired between wavelengths of 190 and 230nm. The presence of chemical species in a protein solution with...
Dafné Wilhelm et al.
Journal of proteomics, 219, 103718-103718 (2020-02-26)
Fibrillar collagens and proteoglycans (PGs) are quantitatively the major constituents of extracellular matrices (ECM). They carry numerous crucial post-translational modifications (PTMs) that tune the resulting biomechanical properties of the corresponding tissues. The mechanisms determining these PTMs remain largely unknown, notably...
Ning Gao et al.
Proceedings of the National Academy of Sciences of the United States of America, 113(51), 14633-14638 (2016-12-09)
Nanomaterial-based field-effect transistor (FET) sensors are capable of label-free real-time chemical and biological detection with high sensitivity and spatial resolution, although direct measurements in high-ionic-strength physiological solutions remain challenging due to the Debye screening effect. Recently, we demonstrated a general...
Xianglu Han et al.
Toxicology, 297(1-3), 1-9 (2012-04-11)
There is an urgent need for in vitro screening assays to evaluate nanoparticle (NP) toxicity. However, the relevance of in vitro assays is still disputable. We administered doses of TiO(2) NPs of different sizes to alveolar epithelial cells in vitro...
Current protocols in protein science, 84, A-A (2016-04-03)
The reagents and methods for purification and use of the most commonly used denaturants, guanidine hydrochloride (guanidine-HCl) and urea, are described. Other protein denaturants and reagents used to fold proteins are briefly mentioned. Sulfhydryl reagents (reducing agents) and "oxido-shuffling" (or...
Protocols
TRI Reagent is a single-step RNA isolation reagent that allows simultaneous isolation of DNA, RNA and protein. This protocol outlines sample prep as well as extraction of the various samples and troubleshooting.
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