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Description

Formula : C19H22O6

Molecular weight : 346.37 g/mol

Synonym : GA3

A “classical” ubiquitous plant hormone, with diverse effects, such as stilumating stem and root growth, and stimulating seed germination.

**This product has been discontinued, please contact us for more information.

Description

The Giemsa’s Azure Eosin Methylene Blue solution can be used for the staining of blood and bone marrow smears, paraffin sections and clinical-cytological specimens. Giemsa staining is one of the standard procedures in histology, demonstrating various cells with their morphological features better than with H&E stain. The Giemsa stain can also be used to detect Helicobacter pylori in gastric tissue biopsies. The specimen material will show cell nuclei stained in various shades of blue, while other structures will appear in various red types. It is an IVD product and CE registered.

Application

For microscopy. For the staining of blood and bone-marrow smears, paraffin sections and clinical-cytological specimens

Product Specification and MSDS for Giemsa’s Stain (Merck).

Description

CAS number: 70-18-8
Chemical Formula: H2NCH(CO2H)CH2CH2CONHCH(CH2SH)CONHCH2CO2H
Molar Mass: 307.32g/mol
Synonyms: γ-L-Glutamyl-L-cysteinyl-glycine, L-Glutathione reduced, GSH

Amino Acid Sequence

γ-Glu-Cys-Gly

General description

Glutathione (GSH) is the most important nonprotein thiol widely distributed in animal tissues, plants, and microorganisms. GSH is also a key determinant of redox signalling and protection against oxidative stress.
Pharmaceutical secondary standards for application in quality control, provide pharma laboratories and manufacturers with a convenient and cost-effective alternative to the preparation of in-house working standards.

Application

HPLC: suitable
Gas Chromatography (GC): suitable

These Secondary Standards are qualified as Certified Reference Materials. These are suitable for use in several analytical applications including but not limited to pharma release testing, pharma method development for qualitative and quantitative analyses, food and beverage quality control testing, and other calibration requirements.

May be used at 5-10 mM to elute glutathione S-transferase (GST) from glutathione agarose.

Biochem/physiol Actions

Endogenous antioxidant that plays a major role in reducing reactive oxygen species formed during cellular metabolism and the respiratory burst. Glutathione-S-transferase catalyzes the formation of glutathione thioethers with xenobiotics, leukotrienes, and other molecules that have an electrophilic center. Glutathione also forms disulfide bonds with cysteine residues in proteins. Via these mechanisms, it can have the paradoxical effect of reducing the efficacy of anti-cancer agents.

Description

Synonyms: Glycerine
Formula: C₃H₈O₃

Analytical reagent grade glycerol for various laboratory uses including gel formation for polyacrylamide gel, altering density of liquids and prevention of freezing for certain samples when stored.

Note:

AR: Analitycal Reagent Grade: Reagents for analytical purpose or research work that need high purity.
CP: Chemically Pure Grade: Reagents for regular practical in its original purity.

Description

CAS number: 56-81-5
Chemical Formula: HOCH2CH(OH)CH2OH
Molar Mass: 92.09 g/mol
Synonyms: 1,2,3-Propanetriol, Glycerin

General description

Glycerol is odourless, colourless, viscous in nature, and exists as a sweet-tasting liquid. It can be derived naturally as well as from petrochemical feedstock. Glycerol has a wide variety of applications and is one of the most valuable and versatile chemical substances in nature. It can be used as an emollient, solvent, sweetening agent, in pharmaceutical formulations, cosmetics, foodstuffs and toiletries. It is very stable and can be easily stored under normal temperature; also it is non-irritating and has no adverse impact on the environment.

Application

Glycerol has been used as:
• A supplement during cell culture of Mycobacterium tuberculosis and Mycobacterium avium.
• A fuel during designing enzymatic biofuel cell.
• A liquid composite matrix with 4-HCCA and 3-amino­quinoline for analysis of neutral and acidic glycans.
• A matrix for fast atom bombardment MS.
• May be employed as liquid matrix for the quantification studies by MALDI (Matrix-assisted laser desorption/ionization mass spectrometry) analysis.

Glycerol is used both in sample preparation and gel formation for polyacrylamide gel electrophoresis. Glycerol (5-10%) increases the density of a sample so that the sample will layer at the bottom of a gel′s sample well. Glycerol is also used to aid in casting gradient gels and as a protein stabilizer and storage buffer component.

Glycerol is used both in sample preparation and gel formation for polyacrylamide gel electrophoresis. Glycerol (5-10%) increases the density of a sample so that the sample will layer at the bottom of a gel’s sample well. Glycerol is also used to aid in casting gradient gels and as a protein stabilizer and storage buffer component.

Description

Synonyms: 2-Aminoacetic acid
Formula: C₂H₅NO₂

Glycine is an important component for some solution used in polyacrylamide gel electrophoresis method in protein analysis, acting as buffer to maintain pH level to prevent damage to the sample during analysis.

Note:

AR: Analitycal Reagent Grade: Reagents for analytical purpose or research work that need high purity.
CP: Chemically Pure Grade: Reagents for regular practical in its original purity.

Description

Gram-Color – stain set for the Gram staining method, is used for human-medical cell diagnosis and serves the purpose of the bacteriological investigation of sample material of human origin, for example smears of body fluids. The Gram-Color solutions are modified and designed in such a way that staining can be carried out in staining cells, on the staining rack, and also in automated staining systems. Gram-color modified, phenol-free is a staining set for staining microorganisms. Aniline dyes in the cell tissue of microorganisms form a red dye-iodine complex when exposed to iodine. Sodium hydrogen carbonate enhances the formation of this complex further still. In gram-positive microorganisms the dye-iodine complex cannot be subsequently dissolved from the cells by decolorizing agents such as alcohol or acetone. The cell remains dark blue in color. In gram-negative microorganisms the dye-iodine complex is dissolved and the cell turns red as a result of counterstaining with fuchsin. Gram-color modified, phenol-free is an IVD / CE product.

The package is sufficient for 250 applications. For further information, please see the IFU which can be found in the kit.

Description

CAS number: 7782-42-5
Molecular weight:12.01
Synonyms: GNPs, xGnP® graphene nanoplatelets-grade C-750

xGnP® graphene nanoplatelets are a unique type of nanoparticle that have a platelet shape and are composed of short stacks of graphene sheets. Their distinctive size and morphology make them highly effective at providing barrier properties, as well as excellent electrical and thermal conductors due to their pure graphitic composition. Additionally, incorporating xGnP® graphene nanoplatelets can enhance mechanical properties such as stiffness, strength, and surface hardness of the matrix material.

Applications include: