Ulrich Fechtel | Researchain

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Archive | 1996

Process for the preparation of ascorbic acid

Ulrich Fechtel; Karlheinz Wembacher

Archive | 1998

PROCESS FOR PREPARING L-ASCORBIC ACID

Klaus Beschmann; Ulrich Fechtel; Wolfgang Heinz; Walter Dr. Kuhn

Archive | 1993

Process for preparing 2-arylbenzimidazole-5-sulfonic acids

Ulrich Heywang; Ingeborg Stein; Ulrich Fechtel; Michael Casutt; Gerald Faller; Hartmut Dr. Härtner

Archive | 2000

Method for producing L-ascorbic acid

Ulrich Fechtel; Wolfgang Heinz; Bernd Müller; Klaus Beschmann; Jöran Stoldt

Archive | 1993

Method of preparing 2-arylbenzimidazole 5-sulphonic acids

Ulrich Heywang; Ingeborg Stein; Ulrich Fechtel; Michael Casutt; Gerald Faller; Hartmut Dr. Härtner

Ullmann's Encyclopedia of Industrial Chemistry | 2011

Vitamins, 7. Vitamin C (l‐Ascorbic Acid)

Bernd Oster; Ulrich Fechtel

Archive | 1994

Process for the preparation of 3-aminopyridines from 3-nitropyridines

Ulrich Fechtel; Karlheinz Wembacher; Heinz-Hermann Bokel

Archive | 1994

Method for preparing 3-aminopyridines from 3 nitropyridines

Ulrich Fechtel; Karlheinz Wembacher; Heinz-Hermann Bokel

Archive | 2007

IMPROVED PROCESS FOR PREPARING 2-ARYLBENZIMIDAZOLE-5-SULFONIC ACID

Michael Casutt; Gerald Faller; Ulrich Fechtel; Hartmut Haertner; Ulrich Heywang; Ingeborg Stein; カスット、ミヒャエル; シュタイン、インゲボルク; ハイヴアンク、ウルリヒ; ファラー、ゲラルト; フェヒテル、ウルリヒ; ヘルトナー、ハルトムート

Archive | 2000