Acylation kit | Content: 2 x 1 ml each for MBTFA , TFAA, MBHFBA
Merk: Macherey-Nagel GmbH & Co. KGWhich is the proper reagent for acylation?Test kit for determination of the optimum acylation.Acylation kit | Content: 2 x 1 ml each for MBTFA , TFAA, MBHFBA
€159,00
Acylation reagents for GC - Anhydrides | Description: HFBA, Capacity ml: 10
Merk: Macherey-Nagel GmbH & Co. KGBeschikbaar in 3 variantenAcylation 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.by-products of acylation with anhydrides: corresponding acidsexcess reagent and the acid formed have to be removedHeptafluorobutyric acid anhydride (HFBA)m.w. 410.06, Bp 106 - 107°C (760mm Hg),C3F7 - CO - O - CO - C3F7density d20°/4° = 1.665Acylation reagents for GC - Anhydrides | Description: HFBA, Capacity ml: 10
€138,00
Acylation reagents for GC - Bisacylamides | Description: MBTFA, Capacity ml: 1
Merk: Macherey-Nagel GmbH & Co. KGBeschikbaar in 3 variantenAcylation with fluorinated acid amides 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.by-products: corresponding neutral acylamides, which can be easily removed due to their high volatility; because of neutral conditions and favourable chromatographic properties often removal of the bisacylamide is not necessary. Thus sample preparation is much more convenient.MBTFA / MBHFBAN-methyl-bis(trifluoroacetamide) MBTFAm.w. 223.08, Bp 123 - 124°C (760mm Hg), density d20°/4° = 1.55,CF3 - CO - N(CH3) - CO - CF3Acylation reagents for GC - Bisacylamides | Description: MBTFA, Capacity ml: 1
€353,00
Alkylation kit | Content: 3x1 ml each for TMSH, DMF-DMA
Merk: Macherey-Nagel GmbH & Co. KGWhich is the proper reagent for methylation?Test kit for determination of the optimum alkylation.Alkylation kit | Content: 3x1 ml each for TMSH, DMF-DMA
€102,00
Alkylation reagents for GC - Trimethylsulphonium hydroxide | Description: TMSH, Capacity ml: 10
Merk: Macherey-Nagel GmbH & Co. KGBeschikbaar in 3 variantenTMSH (0.2 M in methanol) M.G. 94.06Alkylation reagents for GC - Trimethylsulphonium hydroxide | Description: TMSH, Capacity ml: 10
€680,00
Derivatisation method development kit | Content: 2 x 1 ml each for TMSH, MSTFA, MBTFA
Merk: Macherey-Nagel GmbH & Co. KGWhich type of derivatisation is best suited for your sample (alkylation, silylation or acylation)? Test kit for determination of the optimum derivatisation.Derivatisation method development kit | Content: 2 x 1 ml each for TMSH, MSTFA, MBTFA
€122,00
Silylation kit | Content: 2 x 1 ml each for MSTFA, BSTFA, TSIM, MSHFBA
Merk: Macherey-Nagel GmbH & Co. KGWhich is the proper reagent for silylation?Test kit for determination of the optimum silylation.Silylation kit | Content: 2 x 1 ml each for MSTFA, BSTFA, TSIM, MSHFBA
€102,00
Silylation reagents - BSTFA, SILYL-991 | Description: SILYL-991 (BSTFA - TMCS (99:1), Capacity ml: 1
Merk: Macherey-Nagel GmbH & Co. KGBeschikbaar in 6 variantenN,O-bis-trimethylsilyl-trifluoroacetamidem.w. 257.4, Bp 40°C (12mm Hg), density d20°/4° = 0.961BSTFA: R = CF3 powerful trimethylsilyl donor with approximately the same donor strength as the non-fluorinated analogue BSAadvantage of BSTFA over BSA: greater volatility of its reaction products (particularly useful for GC of some lower boiling TMS amino acids.BSTFA is nonpolar (less polar than MSTFA), and can be mixed with acetonitrile for improved solubility. For silylating fatty acid amides, hindered hydroxyls and other compounds, which are difficult to silylate (like secondary alcohols and amines), we recommend BSTFA + 1% trimethylchlorosilane (TMCS), available under the designation SILYL-991.Silylation reagents - BSTFA, SILYL-991 | Description: SILYL-991 (BSTFA - TMCS (99:1), Capacity ml: 1
€159,00
Silylation reagents - MSTFA | Description: MSTFA, Capacity ml: 10
Merk: Macherey-Nagel GmbH & Co. KGBeschikbaar in 7 variantenN-methyl-N-trimethylsilyl-trifluoroacetamidem.w. 199.1, Bp 70 °C (75 mm Hg), density d20°/4° = 1.11MSTFA: R' = CF3, R" = CH3The most volatile trimethylsilyl amide available.Very strong TMS donor which does not cause any noticeable fouling of the FID burning chamber even after long-time measuring series.The already good solution characteristics can be improved by addition of submolar quantities of protic solvents (e.g. TFA for extremely polar compounds such as hydrochlorides) or pyridine (e.g. for carbohydrates).Silylation reagents - MSTFA | Description: MSTFA, Capacity ml: 10
€114,00
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