Publications by authors named "Sayaka Masada"

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Resultant compound from sublimation test for Gentianae Radix in Japanese Pharmacopoeia was 5-(hydroxymethyl)furfural.
Atsushi Tsuge, Yuto Goto, Sayaka Masada, Michiho Ito

J Nat Med· June 2024

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In Silico Prediction of N-Nitrosamine Formation Pathways of Pharmaceutical Products.
Genichiro Tsuji, Takashi Kurohara, Takuji Shoda, Hidetomo Yokoo, Takahito Ito, Sayaka Masada

Chem Pharm Bull (Tokyo)· February 2024

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Comparison of ephedrine and pseudoephedrine contents in 34 Kampo extracts containing Ephedrae Herba used clinically in Japan.
Mitsuhiko Nose, Risa Kobayashi, Momoka Tada, Shinsuke Hisaka, Sayaka Masada

J Nat Med· June 2023

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N-Nitrosodimethylamine (NDMA) Formation from Ranitidine Impurities: Possible Root Causes of the Presence of NDMA in Ranitidine Hydrochloride.
Hidetomo Yokoo, Eiichi Yamamoto, Sayaka Masada, Nahoko Uchiyama, Genichiro Tsuji

Chem Pharm Bull (Tokyo)· October 2021

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A simple and rapid method to simultaneously analyze ciclesonide and its impurities in a ciclesonide metered-dose inhaler using on-line supercritical fluid extraction/supercritical fluid chromatography/quadrupole time-of-flight mass spectrometry.
Seiji Tanaka, Nahoko Uchiyama, Takahiro Goda, Tetsuo Iida, Shinnosuke Horie, Sayaka Masada

J Pharm Biomed Anal· September 2021

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Miroestrol Quantification in Pueraria mirifica Crude Drugs and Products by Single-Reference UPLC/PDA/MS Using Relative Molar Sensitivities to Kwakhurin.
Sayaka Masada, Junko Hosoe, Ryoko Arai, Yosuke Demizu, Takashi Hakamatsuka

Chem Pharm Bull (Tokyo)· June 2021

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Temperature-Dependent Formation of N-Nitrosodimethylamine during the Storage of Ranitidine Reagent Powders and Tablets.
Yasuhiro Abe, Eiichi Yamamoto, Hiroyuki Yoshida, Akiko Usui, Naomi Tomita, Sayaka Masada

Chem Pharm Bull (Tokyo)· October 2020

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Facile Synthesis of Kwakhurin, a Marker Compound of Pueraria mirifica and Its Quantitative NMR Analysis for Standardization as a Reagent.
Genichiro Tsuji, Masaaki Yusa, Sayaka Masada, Hidetomo Yokoo, Junko Hosoe

Chem Pharm Bull (Tokyo)· August 2020

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Effect of Schisandrae Fructus on glycyrrhizin content in Kampo extracts containing Glycyrrhizae Radix used clinically in Japan.
Mitsuhiko Nose, Momoka Tada, Asuka Kato, Shinsuke Hisaka, Sayaka Masada

J Nat Med· September 2019

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Rapid and efficient high-performance liquid chromatography analysis of N-nitrosodimethylamine impurity in valsartan drug substance and its products.
Sayaka Masada, Genichiro Tsuji, Ryoko Arai, Nahoko Uchiyama, Yosuke Demizu

Sci Rep· August 2019

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Quality Assessment of Medicinal Product and Dietary Supplements Containing Vitex agnus-castus by HPLC Fingerprint and Quantitative Analyses.
Mami Sogame, Yoko Naraki, Takahiro Sasaki, Masaharu Seki, Kazuyoshi Yokota, Sayaka Masada

Chem Pharm Bull (Tokyo)· June 2019

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Analysis of an Impurity, N-Nitrosodimethylamine, in Valsartan Drug Substances and Associated Products Using GC-MS.
Tomoaki Tsutsumi, Hiroshi Akiyama, Yosuke Demizu, Nahoko Uchiyama, Sayaka Masada

Biol Pharm Bull· April 2019

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Survey on the Original Plant Species of Crude Drugs Distributed as Cynanchi Wilfordii Radix and Its Related Crude Drugs in the Korean and Chinese Markets.
Naoko Sato-Masumoto, Takashi Uchikura, Hidemi Sugiwaki, Morio Yoshimura, Sayaka Masada

Biol Pharm Bull· June 2018

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Geissoschizine synthase controls flux in the formation of monoterpenoid indole alkaloids in a Catharanthus roseus mutant.
Yang Qu, Antje M K Thamm, Matthew Czerwinski, Sayaka Masada, Kyung Hee Kim

Planta· March 2018

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Correction to: Comparison of glycyrrhizin content in 25 major kinds of Kampo extracts containing Glycyrrhizae Radix used clinically in Japan.
Mitsuhiko Nose, Momoka Tada, Rika Kojima, Kumiko Nagata, Shinsuke Hisaka, Sayaka Masada

J Nat Med· March 2018

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Comparison of glycyrrhizin content in 25 major kinds of Kampo extracts containing Glycyrrhizae Radix used clinically in Japan.
Mitsuhiko Nose, Momoka Tada, Rika Kojima, Kumiko Nagata, Shinsuke Hisaka, Sayaka Masada

J Nat Med· October 2017

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[Chemical Analysis of Counterfeit Hepatitis C Drug Found in Japan].
Nahoko Uchiyama, Hiroyuki Kamakura, Sayaka Masada, Takashi Tsujimoto, Junko Hosoe

Yakugaku Zasshi· October 2017

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Determination and Identification of a Specific Marker Compound for Discriminating Shrub Chaste Tree Fruit from Agnus Castus Fruit Based on LC/MS Metabolic Analysis.
Tadahiro Yahagi, Sayaka Masada, Naohiro Oshima, Ryuta Suzuki, Hiroshi Matsufuji

Chem Pharm Bull (Tokyo)· December 2016

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Qualitative and Quantitative Evaluation of Drug and Health Food Products Containing Red Vine Leaf Extracts on the Japanese Market.
Sayaka Masada, Yutaka Takahashi, Yukihiro Goda, Takashi Hakamatsuka

Chem Pharm Bull (Tokyo)· September 2016

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Authentication of the botanical origin of Western herbal products using Cimicifuga and Vitex products as examples.
Sayaka Masada

J Nat Med· July 2016

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Identification of New Diterpenes as Putative Marker Compounds Distinguishing Agnus Castus Fruit (Chaste Tree) from Shrub Chaste Tree Fruit (Viticis Fructus).
Naohiro Oshima, Sayaka Masada, Ryuta Suzuki, Kanae Yagi, Hiroshi Matsufuji

Planta Med· January 2016

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Disintegration Test of Health Food Products Containing L. or L. in the Japanese Market.
Naoko Sato-Masumoto, Sayaka Masada, Satoshi Takahashi, Sachiko Terasaki, Yoichi Yokota

Medicines (Basel)· April 2015

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Making iridoids/secoiridoids and monoterpenoid indole alkaloids: progress on pathway elucidation.
Vincenzo De Luca, Vonny Salim, Antje Thamm, Sayaka Atsumi Masada, Fang Yu

Curr Opin Plant Biol· June 2014

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Functional and structural characterization of a flavonoid glucoside 1,6-glucosyltransferase from Catharanthus roseus.
Sayaka Masada, Kazuyoshi Terasaka, Yukie Oguchi, Seiji Okazaki, Tunehiro Mizushima

Plant Cell Physiol· August 2009

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Purification and characterization of UDP-glucose : curcumin glucoside 1,6-glucosyltransferase from Catharanthus roseus cell suspension cultures.
Yukie Oguchi, Sayaka Masada, Toshiya Kondo, Kazuyoshi Terasaka, Hajime Mizukami

Plant Cell Physiol· November 2007

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