Hasegawa Koutaro 長谷川弘太郎

… Alternative Names

長谷川弘太郎ハセガワコウタロウ

Hasegawa Kotaro 長谷川弘太郎

HASEGAWA Koutarou 長谷川弘太郎

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Researcher Number	40574025
Other IDs	https://orcid.org/0000-0003-4567-3949
Affiliation (Current)	2025: 浜松医科大学, 医学部, 教授
Affiliation (based on the past Project Information) *help	2023: 浜松医科大学, 医学部, 教授 2021 – 2022: 浜松医科大学, 医学部, 准教授 2018: 浜松医科大学, 医学部, 准教授 2015 – 2017: 浜松医科大学, 医学部, 助教 2010: 浜松医科大学, 医学部, リサーチアシスタント
Review Section/Research Field	Principal Investigator Legal medicine / Basic Section 58040:Forensics medicine-related Except Principal Investigator Legal medicine
Keywords	Principal Investigator LC-MS/MS / 危険ドラッグ / 司法解剖 / 人体試料 / 高感度分析 / 物質体内分布 / 超高感度分析 / 関節軟骨 / 関節液 / 質量分析 … More / 人体代謝物 / 法医中毒学 / GC-MS / 死後体内分布/再分布 / 尿中代謝物 / 合成カンナビノイド / LC-MS-MS / 危険ドラッグ代謝物 / マトリックス効果 / 標準添加法 / QuEChERS法 / 死後体内分布 … More Except Principal Investigator 安心 / 安全 / 法医学 / 社会医学 / 法中毒学 / 超高速型液体クロマトグラフィー / 薬毒物分析 / 違法ドラッグ Less

Development of high-sensitive detection method for compounds taken even decades ago, using human synovial fluid or cartilage specimensPrincipal Investigator
- Principal Investigator
  
  Hasegawa Koutaro
- Project Period (FY)
  2021 – 2023
- Research Category
  
  Grant-in-Aid for Scientific Research (C)
- Review Section
  
  Basic Section 58040:Forensics medicine-related
- Research Institution
  Hamamatsu University School of Medicine
Development of sensitive analytical method for metabolites of abused drugs in human samplesPrincipal Investigator
- Principal Investigator
  
  Hasegawa Koutaro
- Project Period (FY)
  2017 – 2018
- Research Category
  
  Grant-in-Aid for Young Scientists (B)
- Research Field
  
  Legal medicine
- Research Institution
  Hamamatsu University School of Medicine
Sensitive analysis for determination of dangerous drugs in authentic human samples using standard addition method.Principal Investigator
- Principal Investigator
  
  Hasegawa Kotaro
- Project Period (FY)
  2015 – 2016
- Research Category
  
  Grant-in-Aid for Young Scientists (B)
- Research Field
  
  Legal medicine
- Research Institution
  Hamamatsu University School of Medicine
DEVELOPMENT OF NEW METHODS FOR ANALYSIS OF ILLICIT DRUGS : COMBINATION OF UPLC AND TOF-MS
- Principal Investigator
  
  SUZUKI Osamu
- Project Period (FY)
  2008 – 2010
- Research Category
  
  Grant-in-Aid for Scientific Research (B)
- Research Field
  
  Legal medicine
- Research Institution
  Hamamatsu University School of Medicine

All 2024 2023 2022 2021 2018 2017 2016 2015 2011 2009

All Journal Article Presentation

[Journal Article] Detection and quantification of etomidate and metomidate in human hairs by ultraperformance liquid chromatography with triple quadrupole mass spectrometry (UPLC?MS/MS)2024
- Author(s)
  Dai Yinyin、Zhang Xiaolong、Zhao Kundi、Wang Yue、Liu Jinlei、Gu Jie、Bai Huiru、Hasegawa Koutaro、Wurita Amin
- Journal Title
  
  Forensic Toxicology
  
  Volume: - Issue: 2 Pages: 232-241
- DOI
  10.1007/s11419-023-00678-6
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-21K10519
[Journal Article] Quantification of a new recreational drug 2-methoxyqualone in human hair using gas chromatography?tandem mass spectrometry2023
- Author(s)
  Qiu Shi、Kang Yimin、Wang Yue、Liu Jinlei、Yang Hongkun、Gu Jie、Bai Huiru、Hasegawa Koutaro、Wurita Amin
- Journal Title
  
  Forensic Science International
  
  Volume: 345 Pages: 111620-111620
- DOI
  10.1016/j.forsciint.2023.111620
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-21K10519
[Journal Article] Simple quantification of propofol and its metabolites in blood and urine using gas chromatography?tandem mass spectrometry (GC?MS/MS)2023
- Author(s)
  Dai Yinyin、Li Yaqing、Zhao Kundi、Wang Yue、Gu Jie、Bai Huiru、Wurita Amin、Hasegawa Koutaro
- Journal Title
  
  Legal Medicine
  
  Volume: 65 Pages: 102333-102333
- DOI
  10.1016/j.legalmed.2023.102333
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-21K10519
[Journal Article] Quantification of the benzimidazole opioid analog isotonitazene in human hair using liquid chromatography-tandem mass spectrometry2023
- Author(s)
  Zhao Kundi、Dai Yinyin、Wang Yue、Liu Jinlei、Gu Jie、Bai Huiru、Wurita Amin、Hasegawa Koutaro
- Journal Title
  
  Legal Medicine
  
  Volume: 64 Pages: 102295-102295
- DOI
  10.1016/j.legalmed.2023.102295
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-21K10519
[Journal Article] Quantification of MDMB-4en-PINACA and ADB-BUTINACA in human hair by gas chromatography?tandem mass spectrometry2022
- Author(s)
  Wang Yue、Pan Yefei、Yang Hongkun、Liu Jinlei、Wurita Amin、Hasegawa Koutaro
- Journal Title
  
  Forensic Toxicology
  
  Volume: 40 Issue: 2 Pages: 340-348
- DOI
  10.1007/s11419-022-00615-z
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-21K10519
[Journal Article] Newly emerging synthetic cannabinoid ADB-4en-PINACA: its identification and quantification in an authentic human hair sample by GC?MS/MS2022
- Author(s)
  Wang Yue、Han Lifeng、Yi Liye、Liu Jinlei、Qiu Shi、Gu Jie、Bai Huiru、Li Jun、Wurita Amin、Hasegawa Koutaro
- Journal Title
  
  Forensic Toxicology
  
  Volume: 41 Issue: 1 Pages: 173-178
- DOI
  10.1007/s11419-022-00643-9
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-21K10519
[Journal Article] Investigation on toxicological usefulness of synovial fluids, as an alternative matrix: postmortem distribution/redistribution of triazolam and its predominant metabolite α-hydroxytriazolam in human body fluids2021
- Author(s)
  Wurita Amin、Suzuki Masako、Miyoshi Naotomo、Minakata Kayoko、Yamagishi Itaru、Nozawa Hideki、Hasegawa Koutaro
- Journal Title
  
  Forensic Toxicology
  
  Volume: 40 Issue: 1 Pages: 208-214
- DOI
  10.1007/s11419-021-00604-8
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-21K10519
[Journal Article] Fatal zolpidem poisoning due to its intravenous self-injection: Post mortem distribution/redistribution of zolpidem and its predominant metabolite zolpidem phenyl-4-carboxylic acid in body fluids and solid tissues in an autopsy case2018
- Author(s)
  Koutaro Hasegawa, Amin Wurita, Hideki Nozawa, Itaru Yamagishi, Kayoko Minakata, Kanako Watanabe, Osamu Suzuki
- Journal Title
  
  Forensic Science International
  
  Volume: 290 Pages: 111-120
- DOI
  10.1016/j.forsciint.2018.06.044
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-16K09206, KAKENHI-PROJECT-17K15880
[Journal Article] Identification and quantification of predominant metabolites of synthetic cannabinoid MAB-CHMINACA in an authentic human urine specimen.2018
- Author(s)
  2.Hasegawa K, Minakata K, Gonmiri K, Nozawa H, Yamagishi I, Watanabe K, Suzuki O
- Journal Title
  
  Drug Testing and Analysis
  
  Volume: 10 Issue: 2 Pages: 365-371
- DOI
  10.1002/dta.2220
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-17K15880, KAKENHI-PROJECT-16K09206
[Journal Article] Sensitive identification and quantification of parent forms of six synthetic cannabinoids in urine samples of human cadavers by liquid chromatography-tandem mass spectrometry2017
- Author(s)
  Minakata K, Yamagishi I, Nozawa H, Hasegawa K, Suzuki M, Gonmori K, Suuzuki O, Watanabe K
- Journal Title
  
  Forensic Toxicology
  
  Volume: 印刷中 Issue: 2 Pages: 275-283
- DOI
  10.1007/s11419-017-0354-0
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-15K19271, KAKENHI-PROJECT-16K09206
[Journal Article] Quantitation of biperiden in whole blood by MALDI-QTOF tandem mass spectrometry, and estimation of new metabolites in urine of deceased subjects treated with biperiden antemortem2017
- Author(s)
  Minakata K, Yamagishi I, Nozawa H, Hasegawa K, Suzuki M, Gonmori K, Suuzuki O, Watanabe K
- Journal Title
  
  Forensic Toxicology
  
  Volume: 35 Issue: 1 Pages: 86-93
- DOI
  10.1007/s11419-016-0341-x
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-15K19271, KAKENHI-PROJECT-16K09206
[Journal Article] Postmortem redistribution of methamphetamine and amphetamine in blood specimens from various blood vessels and in the specimens from rericardial fluid, bile, stomach contents and various solid tissues collected from a human cadaver2016
- Author(s)
  Amin W, Hasegawa K, Minakata K, Gonmori K, Nozawa H, Yamagishi I, Suzuki O, Watanabe K
- Journal Title
  
  Forensic Toxicology
  
  Volume: 34 Issue: 1 Pages: 191-198
- DOI
  10.1007/s11419-015-0303-8
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-15K19271, KAKENHI-PROJECT-16K09206
[Journal Article] Application of MALDI-QTOF mass spectrometry to the determination of timiperone in whole blood, and estimation of its new metabolites in urine of a deceased subject who had been treated timiperone antemortem2016
- Author(s)
  Nozawa H, Minakata K, Yamagishi I, Hasegawa K, Suzuki M, Gonmori K, Suzuki O, Watanabe K
- Journal Title
  
  Forensic Toxicology
  
  Volume: 34 Issue: 2 Pages: 363-371
- DOI
  10.1007/s11419-016-0323-z
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-15K19271, KAKENHI-PROJECT-16K09206
[Journal Article] Simultaneous determination of cyclic antidepressants and their related drugs and the estimation of new metabolites in human whole blood and urine by MALDI-QTOF-mass spectrometry2016
- Author(s)
  Nozawa H, Minakata K, Yamagishi I, Hasegawa K, Suzuki M, Gonmori K, Suzuki O, Watanabe K
- Journal Title
  
  Forensic Toxicology
  
  Volume: 34 Issue: 2 Pages: 244-255
- DOI
  10.1007/s11419-016-0313-1
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-15K19271, KAKENHI-PROJECT-16K09206
[Journal Article] Postmortem distribution of flunitrazepam and its metabolite 7-aminoflunitrazepam in body fluids and solid tissues in an autopsy case2015
- Author(s)
  Hasegawa K, Amin W, Minakata K, Gonmori K, Nozawa H, Yamagishi I, Watanabe K, Suzuki O
- Journal Title
  
  Legal Medicine
  
  Volume: 17 Issue: 5 Pages: 394-400
- DOI
  10.1016/j.legalmed.2015.06.002
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-15K19271
[Journal Article] Postmortem distribution of MAB-CHMINACA in body fluids and solid tissues of a human cadaver2015
- Author(s)
  Hasegawa K, Amin W, Minakata K, Gonmori K, Nozawa H, Yamagishi I, Watanabe K, Suzuki O
- Journal Title
  
  Forensic Toxicology
  
  Volume: 33 Issue: 2 Pages: 380-387
- DOI
  10.1007/s11419-015-0272-y
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-15K19271
[Journal Article] Identification and quantitation of 5-fluoro-ADB-PINACA and MAB-CHMINACA in dubious herbal products2015
- Author(s)
  Amin W, Hasegawa K, Minakata K, Gonmori K, Nozawa H, Yamagishi I, Watanabe K, Suzuki O
- Journal Title
  
  Forensic Toxicology
  
  Volume: 33 Issue: 2 Pages: 213-220
- DOI
  10.1007/s11419-015-0264-y
- Peer Reviewed / Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-15K19271
[Journal Article] GC/MS with post-column switching for large volume injection of headspace samples : sensitive determination of volatile organic compounds in human whole blood and urine.2011
- Author(s)
  K.Watanabe, H.Fujita, K.Hasegawa, K.Gonmori, O.Suzuki
- Journal Title
  
  Anal.Chem. 83
  
  Pages: 1475-1479
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20390194
[Journal Article] Simple isotope dilution headspace-GC-MS analysis of naphthalene and p-dichlorobenzene in whole blood and urine2009
- Author(s)
  K.Watanabe, K.Hasegawa, I.Yamagishi, H.Nozawa, M.Takaba, O.Suzuki
- Journal Title
  
  Anal.Sci. 25
  
  Pages: 1301-1305
- NAID
  10026779869
- Peer Reviewed
- Data Source
  KAKENHI-PROJECT-20390194
[Presentation] 4-quinazolinone誘導体(methaqualone, etaqualone, 2-methoxyqualone)に対する機器分析の試み2023
- Author(s)
  長谷川弘太郎
- Organizer
  第45回日本法医学会学術中部地方集会
- Data Source
  KAKENHI-PROJECT-21K10519
[Presentation] Determination of a novel quinazolinone derivative 2-methoxyqualone in human hair using gas chromatography－tandem mass spectrometry2023
- Author(s)
  Koutaro Hasegawa
- Organizer
  The 60th Annual Meeting of the International Association of Forensic Toxicologists
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-21K10519
[Presentation] Identification and quantification of synthetic cannabinoid 5F-ADB-PINACA and its predominant metabolites in an authentic human urine specimen2018
- Author(s)
  Koutaro Hasegawa, Amin Wurita, Kayoko Minakata, Hideki Nozawa, Itaru Yamagishi, Kanako Watanabe, Osamu Suzuki
- Organizer
  TIAFT(The International Association of Forensic Toxicologists) 2018
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-17K15880
[Presentation] ヒト尿中からの合成カンナビノイド５F-ADB-PINACA代謝物の検出2017
- Author(s)
  長谷川弘太郎
- Organizer
  第39回日本法医学会学術中部地方集会
- Data Source
  KAKENHI-PROJECT-17K15880
[Presentation] ヒト尿中からの合成カンナビノイドMAB-CHMINACAの代謝物の同定と定量2017
- Author(s)
  長谷川弘太郎
- Organizer
  日本法中毒学会第36年会
- Data Source
  KAKENHI-PROJECT-17K15880
[Presentation] 解剖事例におけるメタンフェタミンとアンフェタミンの臓器・体液での再分布の検討2016
- Author(s)
  長谷川弘太郎，阿民勿日他，南方かよ子，権守邦夫，野澤秀樹，山岸格，鈴木修，渡部加奈子
- Organizer
  日本法中毒学会第35年会
- Place of Presentation
  大阪
- Year and Date
  2016-07-01
- Data Source
  KAKENHI-PROJECT-15K19271
[Presentation] Identification and quantification of metabolites of AB-CHMINACA in a urine specimen of an abuser2016
- Author(s)
  Hasegawa K, Wurita A, Minakata K, Gonmori K, Nozawa H, Yamagishi I, Suzuki O, Watanabe K
- Organizer
  54th TIAFT (The International Association of Forensic Toxicologists) meeting
- Place of Presentation
  Brisbane, Australia
- Year and Date
  2016-08-28
- Int'l Joint Research
- Data Source
  KAKENHI-PROJECT-15K19271
[Presentation] 1中毒死例における合成カチノンPV9の生前・死後体内分布2015
- Author(s)
  長谷川弘太郎, 阿民勿日他, 南方かよ子, 権守邦夫, 野澤秀樹, 山岸格, 渡部加奈子, 鈴木修
- Organizer
  日本法中毒学会第34年会
- Place of Presentation
  福岡
- Year and Date
  2015-06-26
- Data Source
  KAKENHI-PROJECT-15K19271

1. SUZUKI Osamu (70093044)

# of Collaborated Projects: 1 results

# of Collaborated Products: 2 results
2. GONMORI Kunio (10006744)

# of Collaborated Projects: 1 results

# of Collaborated Products: 1 results
3. MINAKATA Kayoko (70115509)

# of Collaborated Projects: 1 results

# of Collaborated Products: 1 results
4. WATANABE Kanako (70288546)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
5. KANNO Sanae (50391090)

# of Collaborated Projects: 1 results

# of Collaborated Products: 0 results
6. SUZUKI Shinichi (00356198)

# of Collaborated Projects: 1 results

# of Collaborated Products: 2 results
7. AMIN wurita

# of Collaborated Projects: 1 results

# of Collaborated Products: 1 results
8. 鈴木加奈子

# of Collaborated Projects: 0 results

# of Collaborated Products: 2 results

Hasegawa Koutaro 長谷川 弘太郎

長谷川 弘太郎 ハセガワ コウタロウ

Hasegawa Kotaro 長谷川 弘太郎

HASEGAWA Koutarou 長谷川 弘太郎

Research Projects

Research Products

Co-Researchers

Development of high-sensitive detection method for compounds taken even decades ago, using human synovial fluid or cartilage specimensPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Review Section

Research Institution

Development of sensitive analytical method for metabolites of abused drugs in human samplesPrincipal Investigator

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

Sensitive analysis for determination of dangerous drugs in authentic human samples using standard addition method.Principal Investigator

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

DEVELOPMENT OF NEW METHODS FOR ANALYSIS OF ILLICIT DRUGS : COMBINATION OF UPLC AND TOF-MS

Principal Investigator

Project Period (FY)

Research Category

Research Field

Research Institution

[Journal Article] Detection and quantification of etomidate and metomidate in human hairs by ultraperformance liquid chromatography with triple quadrupole mass spectrometry (UPLC?MS/MS)2024

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Quantification of a new recreational drug 2-methoxyqualone in human hair using gas chromatography?tandem mass spectrometry2023

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Simple quantification of propofol and its metabolites in blood and urine using gas chromatography?tandem mass spectrometry (GC?MS/MS)2023

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Quantification of the benzimidazole opioid analog isotonitazene in human hair using liquid chromatography-tandem mass spectrometry2023

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Quantification of MDMB-4en-PINACA and ADB-BUTINACA in human hair by gas chromatography?tandem mass spectrometry2022

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Newly emerging synthetic cannabinoid ADB-4en-PINACA: its identification and quantification in an authentic human hair sample by GC?MS/MS2022

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Investigation on toxicological usefulness of synovial fluids, as an alternative matrix: postmortem distribution/redistribution of triazolam and its predominant metabolite α-hydroxytriazolam in human body fluids2021

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Fatal zolpidem poisoning due to its intravenous self-injection: Post mortem distribution/redistribution of zolpidem and its predominant metabolite zolpidem phenyl-4-carboxylic acid in body fluids and solid tissues in an autopsy case2018

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Identification and quantification of predominant metabolites of synthetic cannabinoid MAB-CHMINACA in an authentic human urine specimen.2018

Author(s)

Journal Title

DOI

Data Source

[Journal Article] Sensitive identification and quantification of parent forms of six synthetic cannabinoids in urine samples of human cadavers by liquid chromatography-tandem mass spectrometry2017

Author(s)

Journal Title

DOI

Hasegawa Koutaro 長谷川弘太郎

長谷川弘太郎ハセガワコウタロウ

Hasegawa Kotaro 長谷川弘太郎

HASEGAWA Koutarou 長谷川弘太郎