119 Ergebnisse für: "derivatisation reagent"

Supplier: Merck

N-Succinimidyl 4-(dimethylamino)benzoate ≥98,0% (durch HPLC), LiChropur™ Derivatisierungsreagenz, für die HPLC, Supelco®

Supplier: Merck

Heptafluorobutyric anhydride (HFB) is a derivatizing reagent. It provides facile and sensitive way for detecting and elucidating structure of numerous alkyl-chain homolog.

Supplier: Merck

Ninhydrin reagent is mostly used for the detection of amino acids. It basically gives a characteristic purple color on reaction with a-amino acids and other amino compounds, provided the pH of the reaction is 5.0 or higher.

Supplier: Merck

N,N-Dimethylformamide dipropyl acetal is an derivatizing reagent.

Supplier: Merck

Dabsylchlorid 98,0-102,0% (durch argentometrische Titration), LiChropur™ Derivatisierungsreagenz, für die HPLC, Supelco®

Supplier: Merck

Ready-to-use spray and dip reagent for chromatography

Supplier: Merck

Dansyl chloride is a fluorogenic reagent which is typically employed for the derivatization of amino acids.

Supplier: Merck

4-[2-(N,N-dimethylamino)ethylaminosulfonyl]-7-(2-aminoethylamino)-2,1,3-benzoxadiazole (DAABD-AE) is a new derivatization reagent for rapid and specific liquid chromatography tandem mass spectrometric quantification of pristanic acid, phytanic acid, and very long chain fatty acids (i.e., hexacosanoic, tetracosanoic, and docosanoic acids) in plasma.

Supplier: Merck

Pentafluorophenylhydrazine may be used as a derivatizing agent in the determination of semi-volatile carbonyl compounds in air and human plasma samples, using high-resolution gas chromatography coupled with gas chromatography (HRGC-MS) and liquid chromatography atmospheric-pressure chemical-ionization mass spectrometry (LC-APCI-MS-MS), respectively.

Supplier: Merck

It was used for spectrophotometric determination and quantization of urea in urine samples.

Supplier: Merck

Fluorescent probe for thiols and pre-column labeling of biological thiols for HPLC

Supplier: Merck

used in the synthesis of water-soluble prodrugs of lipophilic alcohols, phenols and amines. This compound is an improved derivative of the well known Di-tert-butyl chloromethyl phosphate. So it can be detected more easily by HPLC-UV, because of higher stability, higher yields and better UV-activity.

Supplier: Merck

3-Amino-9-ethylcarbazole is a peroxidase substrate suitable for use in immunoblotting and immunohistochemical staining procedures. This substrate produces an insoluble end product that is red in color and can be observed visually.

Supplier: MACHEREY-NAGEL

BSA is a strong silylation reagent that forms very stable TMS derivatives with a large variety of compounds, e.g., non-sterically hindered alcohols, carboxylic acids, phenols, enols, steroids, (biogenic) amines and alkaloids.

Supplier: Merck

N,O-Bis(trimethylsilyl)trifluoracetamid ≥98,0% (durch GC) Derivatisierungsreagenz, für die Gaschromatographie, Supelco®

Supplier: MACHEREY-NAGEL

Silyl-271 will derivatise all hydroxyl groups in any position. Useful in multiderivatisation schemes involving hydroxyl or amine groups.

Supplier: Merck

Derivatization reagent for phenols and alcohols.

Supplier: MACHEREY-NAGEL

Silylation reagent with recommended applications: carboxylic acids, alcohols, phenols, primary and secondary amines and amino acids.

Supplier: MACHEREY-NAGEL

Acylation with HFBA can be used for alcohols, phenols, carboxylic acids, amines, amino acids and steroids forming volatile, stable derivatives suited for GC-FID as well as for GC-ECD detection.

Supplier: MACHEREY-NAGEL

TMCS is often used as a catalyst with other trimethylsilyl reagents. Without additives it can be used for preparing TMS derivatives of organic acids. Together with methanol it can be used for methylation.

Supplier: MACHEREY-NAGEL

HMDS is weak TMS donor. If used as sole reagent, it is slow and not very effective. After addition of catalytic quantities (e.g., 1 %) of TMCS or as a mixture with TMCS it is a fast and quantitative reagent for trimethylsilylation of organic compounds.

Supplier: MACHEREY-NAGEL

Acylation with fluorinated bisacylamides is recommended for alcohols, primary and secondary amines as well as for thiols under mild, neutral conditions.

Supplier: MACHEREY-NAGEL

TSIM is the strongest hydroxyl silylator; reagent of choice for carbohydrates and most steroids (even highly hindered steroids).

Supplier: MACHEREY-NAGEL

Methylation with TMSH is recommended for free acids, chlorophenoxycarboxylic acids, their salts and derivatives as well as for phenols and chlorophenols. Lipids or triglycerides can be converted to the corresponding fatty acid methyl esters (FAMEs) by a simple transesterification.

Supplier: MACHEREY-NAGEL

Acylation with fluorinated acid anhydrides can be used for alcohols, phenols, carboxylic acids, amines, amino acids and steroids forming volatile, stable derivatives suited for FID as well as for ECD detection.

Supplier: MACHEREY-NAGEL

Silylation in GC stands for replacement of active hydrogen atoms by a trimethylsilyl group (TMS derivative).

Supplier: MACHEREY-NAGEL

Silyl-991 is recommended for silylation of fatty acid amides, hindered hydroxyls and other compounds which are difficult to silylate (e.g., secondary alcoholes and amines).

Supplier: Merck

(+)-1-(9-Fluorenyl)ethyl chloroformate [(+)-FLEC] is a chiral derivatizing reagent. It helps in separating enantiomers of α-amino acids, as well as helps in determining its optical purity using HPLC method.

Supplier: MACHEREY-NAGEL

This derivitisation reagent is recommended for alcohols, primary and secondary amines as well as for thiols under mild, neutral conditions. MBTFA also forms very volatile derivatives with carbohydrates.

Supplier: Merck

5-Butylpicolinsäure ≥99,0% (durch HPLC) Derivatisierungsreagenz, für die HPLC, Supelco®