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International Journal of Tryptophan Research

SAGE Publications Ltd · United Kingdom · Est. 2008

ISSN1178-6469eISSN1178-6469

SJR Q1✓ WOS ESCI✓ Scopus / SJR

/ 100

High Trust

PubScope credibility score from verifiable indexing & ethics signals

Score Breakdown

◆ Scopus Q178

✓ Corroboration (3 more)+18

⚠ Withdrawn from DOAJ-15

Total81

Level data: Norwegian Register (HK-dir), NLOD 2.0. · Third-party records · how this is calculated · Report an error →

Removed from DOAJ (2024-05-14). DOAJ's stated reason: Journal is not open access. A removal from the Directory of Open Access Journals is a quality/transparency signal — it can mean the journal became inactive or failed DOAJ's re-review criteria. This is not proof of predatory practice, but verify the journal's current status and policies before submitting. Check on DOAJ ↗

⚡ Speed vs Prestige

How does this journal balance review speed with impact level?

Publication speed: not measurable

publisher doesn’t disclose per-article submission dates — we never estimate

SJR Rank

Top 25% in field

Impact Factor & Quartile · Web of Science (JCR)

✓ Indexed in the Web of Science Core Collection (ESCI) — Clarivate publishes an official Journal Impact Factor and JCR quartile for this journal.

See the official Impact Factor & quartile on the journal’s page ↗

The Impact Factor & JCR quartile are licensed by Clarivate — we link you to the official source instead of reprinting a number that can go out of date. Open metrics below: SCImago Q1. Source: Clarivate Journal Citation Reports.

SJR Scorei

1.129

H-Indexi

CiteScore

View ↗

Scopus metric · on the journal’s page

SNIPi

0.679

Total Worksi

202

Total Citationsi

8,655

2yr Mean Citednessi

3.58

Open Impact Factor alternative

Aims & Scope

Subject areas: Neurosciences; Biochemistry; Molecular Biology.

General Information

Country / RegionUnited Kingdom

Primary LanguageEnglish

1st Year Published2008

FrequencyIrregular

StatusActive (last: 2026)

Total Publications202

Publisher OrgSAGE Publishing

OA Since2007

Visit Journal Website

Submission Info

Peer Review—

Review Time—

Acceptance Rate—

OA License—

OA Rate—

Ethics & Quality

COPE Member✗ No

OASPA Member✗ No

Not on Predatory Lists✓ Yes

Think.Check.Submit Compliance

thinkchecksubmit.org

6/12 · 50%

✅

Do you know the journal / publisher?

SAGE Publications Ltd

✅

Does the journal have a website?

✓ Linked

✅

Is the ISSN verified?

1178-6469 / 1178-6469

✅

Indexed in a trusted database?

WoS, Scopus, PubMed

❌

Peer review process documented?

N/A

❌

Follows ethical publishing standards (COPE)?

N/A

❌

APC fees clearly disclosed?

N/A

✅

Not on predatory/blacklists?

✓ Clean

❌

Long-term digital preservation?

N/A

❌

Plagiarism detection in place?

N/A

❌

Listed in DOAJ (verified OA)?

N/A

✅

Primary language documented?

English

Based on the Think.Check.Submit framework by DOAJ, COPE & OASPA. All data from verified open sources.

Publication & Citation Trend

Articles published

Citations received

950

2019

838

2020

127

2021

314

2022

166

2023

2024

2025

2026

Source: OpenAlex · Each year’s green bar = citations earned by that year’s papers, counted to date — so recent years look lower simply because their papers haven’t had time to be cited yet.

SJR Quartile by Discipline

Scimago ranks this journal separately in each subject category — its quartile can differ by discipline.

BiochemistryQ1

Molecular BiologyQ2

Subject Classification

Web of Science Categories

Neurosciences

Scopus Categories

BiochemistryMolecular Biology

Research Topics (OpenAlex)

Tryptophan and brain disordersStress Responses and CortisolGut microbiota and healthBipolar Disorder and TreatmentDiet and metabolism studiesCircadian rhythm and melatoninNeurotransmitter Receptor Influence on BehaviorNeuroinflammation and Neurodegeneration MechanismsNeuroendocrine regulation and behaviorSirtuins and Resveratrol in Medicine

Frequently asked questions about International Journal of Tryptophan Research

Is International Journal of Tryptophan Research a predatory journal?

International Journal of Tryptophan Research was withdrawn from the Directory of Open Access Journals (DOAJ) — DOAJ's stated reason: "Journal is not open access" (2024-05-14). Withdrawal is not a predatory verdict, but it is a material editorial signal; it remains indexed in Web of Science, Scopus. Verify the journal's current status on DOAJ and its official site before submitting.

What is the impact factor of International Journal of Tryptophan Research?

International Journal of Tryptophan Research is indexed in the Web of Science Core Collection, so Clarivate publishes an official Journal Impact Factor for it (since the 2023 Journal Citation Reports, every Core Collection journal — including Arts & Humanities and Emerging Sources titles — receives one). PubScope links to Clarivate's official source rather than reprinting the number, which can be out of date. Its open 2-year mean citedness is 3.58.

Is International Journal of Tryptophan Research indexed in Scopus and Web of Science?

International Journal of Tryptophan Research is indexed in Web of Science, Scopus.

What is the aims and scope of International Journal of Tryptophan Research?