8-methyl nonanoic acid, the methyl-branched medium-chain fatty acid released from dihydrocapsaicin

evidence_span

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experimental_model

3T3-L1 adipocytes assayed for viability, lipid accumulation, AMPK activity, lipolysis and glucose uptake

exposure

8-methyl nonanoic acid applied during 48-hour nutrient starvation or 5-day maturation

limitations

A cell-line study of the metabolite. The two exposure windows give different effects, which is recorded rather than averaged.

nutrient_topic

Dihydrocapsaicin research collection; topical membership is not evidence of a direct clinical effect, and dihydrocapsaicin is recorded separately from capsaicin. · Dihydrocapsaicin

organism

Mouse cells

plain_language

In fat cells under starvation the fragment switches on the energy sensor and less fat accumulates.

primary_references

[dhc-p36681810] Cellular responses to 8-methyl nonanoic acid, a degradation by-product of dihydrocapsaicin, in 3T3-L1 adipocytes. (2023). https://pubmed.ncbi.nlm.nih.gov/36681810/ DOI: 10.1186/s12906-023-03844-w

tissue_or_cell_type

Adipocytes

Dihydrocapsaicin: the second capsaicinoid, the hypothermia it is used to induce, what the gut and liver do to it, and what it does without TRPV1 (2026-09-21) · lines 621–632

AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · 3T3-L1 adipocytes assayed for viability, lipid accumulation, AMPK activity, lipolysis and glucose uptake · source_derived_draft · unverified_draft

### dhc-8-mna-activates-ampk In 3T3-L1 adipocytes 8-methyl nonanoic acid caused no impact on cell viability, and during nutrient starvation it decreased lipid amounts in association with AMP-activated protein kinase activation, a molecular event that suppresses lipogenic processes. Condition category: normal nutrient_topic: Dihydrocapsaicin research collection; topical membership is not evidence of a direct clinical effect, and dihydrocapsaicin is recorded separately from capsaicin. plain_language: In fat cells under starvation the fragment switches on the energy sensor and less fat accumulates. organism: Mouse cells tissue_or_cell_type: Adipocytes experimental_model: 3T3-L1 adipocytes assayed for viability, lipid accumulation, AMPK activity, lipolysis and glucose uptake limitations: A cell-line study of the metabolite. The two exposure windows give different effects, which is recorded rather than averaged. exposure: 8-methyl nonanoic acid applied during 48-hour nutrient starvation or 5-day maturation evidence_span: {"source_cache": "artifacts/dihydrocapsaicin-research/36681810.abstract.txt", "locator": "Indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "14c4f7752262c5a27fb7b848664015595f598cb51edcc2d5df96f1140be143cb", "start_char": 0, "end_char": 1600, "text_sha256": "14c4f7752262c5a27fb7b848664015595f598cb51edcc2d5df96f1140be143cb"} [dhc-p36681810] Cellular responses to 8-methyl nonanoic acid, a degradation by-product of dihydrocapsaicin, in 3T3-L1 adipocytes. (2023). https://pubmed.ncbi.nlm.nih.gov/36681810/ DOI: 10.1186/s12906-023-03844-w

evidence_span

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experimental_model

3T3-L1 adipocytes assayed for viability, lipid accumulation, AMPK activity, lipolysis and glucose uptake

exposure

8-methyl nonanoic acid applied during 48-hour nutrient starvation or 5-day maturation

limitations

A cell-line study of the metabolite. The two exposure windows give different effects, which is recorded rather than averaged.

nutrient_topic

Dihydrocapsaicin research collection; topical membership is not evidence of a direct clinical effect, and dihydrocapsaicin is recorded separately from capsaicin. · Dihydrocapsaicin

organism

Mouse cells

plain_language

Given while the fat cells mature, it makes them take up more glucose and release less fat on demand.

primary_references

[dhc-p36681810] Cellular responses to 8-methyl nonanoic acid, a degradation by-product of dihydrocapsaicin, in 3T3-L1 adipocytes. (2023). https://pubmed.ncbi.nlm.nih.gov/36681810/ DOI: 10.1186/s12906-023-03844-w

tissue_or_cell_type

Adipocytes

Dihydrocapsaicin: the second capsaicinoid, the hypothermia it is used to induce, what the gut and liver do to it, and what it does without TRPV1 (2026-09-21) · lines 634–645

AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · 3T3-L1 adipocytes assayed for viability, lipid accumulation, AMPK activity, lipolysis and glucose uptake · source_derived_draft · unverified_draft

### dhc-8-mna-maturation-effects Adipocytes treated with 8-methyl nonanoic acid during 5-day maturation exhibited a reduced lipolytic response to isoproterenol and an increased glucose uptake when stimulated with insulin. Condition category: normal nutrient_topic: Dihydrocapsaicin research collection; topical membership is not evidence of a direct clinical effect, and dihydrocapsaicin is recorded separately from capsaicin. plain_language: Given while the fat cells mature, it makes them take up more glucose and release less fat on demand. organism: Mouse cells tissue_or_cell_type: Adipocytes experimental_model: 3T3-L1 adipocytes assayed for viability, lipid accumulation, AMPK activity, lipolysis and glucose uptake limitations: A cell-line study of the metabolite. The two exposure windows give different effects, which is recorded rather than averaged. exposure: 8-methyl nonanoic acid applied during 48-hour nutrient starvation or 5-day maturation evidence_span: {"source_cache": "artifacts/dihydrocapsaicin-research/36681810.abstract.txt", "locator": "Indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "14c4f7752262c5a27fb7b848664015595f598cb51edcc2d5df96f1140be143cb", "start_char": 0, "end_char": 1600, "text_sha256": "14c4f7752262c5a27fb7b848664015595f598cb51edcc2d5df96f1140be143cb"} [dhc-p36681810] Cellular responses to 8-methyl nonanoic acid, a degradation by-product of dihydrocapsaicin, in 3T3-L1 adipocytes. (2023). https://pubmed.ncbi.nlm.nih.gov/36681810/ DOI: 10.1186/s12906-023-03844-w

evidence_span

{"source_cache": "artifacts/dihydrocapsaicin-research/40827132.abstract.txt", "locator": "Indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "ec9a287d601f180f392c2944bd9bf509dbc0f27924ec10143aa9a2a5bc77b817", "start_char": 0, "end_char": 1954, "text_sha256": "ec9a287d601f180f392c2944bd9bf509dbc0f27924ec10143aa9a2a5bc77b817"}

experimental_model

C57BL/6NJcl mice fed for 18 weeks with glucose and insulin tolerance testing

exposure

High-fat diet supplemented with triacylglycerols consisting of 8-methyl nonanoic acid or isocaloric soybean oil

limitations

Tests the metabolite rather than the parent compound, over a long feeding period, and reports a clear negative alongside the positives. 8-methyl nonanoic acid is non-pungent.

nutrient_topic

Dihydrocapsaicin research collection; topical membership is not evidence of a direct clinical effect, and dihydrocapsaicin is recorded separately from capsaicin. · Dihydrocapsaicin

organism

Mouse

plain_language

The fragment left when the molecule is cut apart slows weight gain and delays insulin resistance, without improving the glucose tests.

primary_references

[dhc-p40827132] Effect of 8-Methyl Nonanoic Acid, a Degradation By-Product of Dihydrocapsaicin, on Energy and Glucose Homeostasis in Diet-Induced Obese Mice. (2025). https://pubmed.ncbi.nlm.nih.gov/40827132/ DOI: 10.2147/jep.s536185

tissue_or_cell_type

Whole body, hypothalamus and adipose tissue

Dihydrocapsaicin: the second capsaicinoid, the hypothermia it is used to induce, what the gut and liver do to it, and what it does without TRPV1 (2026-09-21) · lines 608–619

AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · C57BL/6NJcl mice fed for 18 weeks with glucose and insulin tolerance testing · source_derived_draft · unverified_draft

### dhc-8-mna-slows-metabolic-syndrome Compared with high-fat-diet mice given isocaloric soybean oil, 8-methyl nonanoic acid feeding reduced caloric intake and body weight gain in diet-induced obese mice in association with weight loss in several tissues and organs and transcriptional downregulation of the orexigenic agouti-related protein in the hypothalamus, and despite no improvement in glucose or insulin tolerance tests it delayed the onset of high-fat-diet-induced insulin resistance during the early experimental period. Condition category: normal nutrient_topic: Dihydrocapsaicin research collection; topical membership is not evidence of a direct clinical effect, and dihydrocapsaicin is recorded separately from capsaicin. plain_language: The fragment left when the molecule is cut apart slows weight gain and delays insulin resistance, without improving the glucose tests. organism: Mouse tissue_or_cell_type: Whole body, hypothalamus and adipose tissue experimental_model: C57BL/6NJcl mice fed for 18 weeks with glucose and insulin tolerance testing limitations: Tests the metabolite rather than the parent compound, over a long feeding period, and reports a clear negative alongside the positives. 8-methyl nonanoic acid is non-pungent. exposure: High-fat diet supplemented with triacylglycerols consisting of 8-methyl nonanoic acid or isocaloric soybean oil evidence_span: {"source_cache": "artifacts/dihydrocapsaicin-research/40827132.abstract.txt", "locator": "Indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "ec9a287d601f180f392c2944bd9bf509dbc0f27924ec10143aa9a2a5bc77b817", "start_char": 0, "end_char": 1954, "text_sha256": "ec9a287d601f180f392c2944bd9bf509dbc0f27924ec10143aa9a2a5bc77b817"} [dhc-p40827132] Effect of 8-Methyl Nonanoic Acid, a Degradation By-Product of Dihydrocapsaicin, on Energy and Glucose Homeostasis in Diet-Induced Obese Mice. (2025). https://pubmed.ncbi.nlm.nih.gov/40827132/ DOI: 10.2147/jep.s536185

evidence_span

{"source_cache": "artifacts/dihydrocapsaicin-research/6710495.abstract.txt", "locator": "Indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "a0a9a5cb2178f2b266fffe5efbd9580a0a1b5c03dd86b4bfe92b105194eb1f9b", "start_char": 0, "end_char": 1416, "text_sha256": "a0a9a5cb2178f2b266fffe5efbd9580a0a1b5c03dd86b4bfe92b105194eb1f9b"}

experimental_model

In vivo and in situ gastrointestinal absorption studies in rats with tritiated dihydrocapsaicin

exposure

Capsaicin and dihydrocapsaicin administered into stomach, jejunum and ileum, with 2,4-dinitrophenol and sodium cyanide as metabolic inhibitors

limitations

Establishes both the route and the first metabolite by direct measurement in portal blood. A 1984 rat study using tritium label rather than mass spectrometry.

nutrient_topic

Dihydrocapsaicin research collection; topical membership is not evidence of a direct clinical effect, and dihydrocapsaicin is recorded separately from capsaicin. · Dihydrocapsaicin

organism

Rat

plain_language

The gut wall snips the molecule in two, and one of the pieces is a small fatty acid that travels on in the blood.

primary_references

[dhc-p6710495] Gastrointestinal absorption and metabolism of capsaicin and dihydrocapsaicin in rats. (1984). https://pubmed.ncbi.nlm.nih.gov/6710495/ DOI: 10.1016/0041-008x(84)90121-2

tissue_or_cell_type

Stomach, jejunum, ileum and portal blood

Dihydrocapsaicin: the second capsaicinoid, the hypothermia it is used to induce, what the gut and liver do to it, and what it does without TRPV1 (2026-09-21) · lines 491–502

AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · In vivo and in situ gastrointestinal absorption studies in rats with tritiated dihydrocapsaicin · source_derived_draft · unverified_draft

### dhc-releases-8-mna Tritiated dihydrocapsaicin was mainly absorbed via the portal system and not by a mesenteric lymphangial one, and the radioactivity in portal blood was composed of 85% dihydrocapsaicin and 15% of its metabolite 8-methyl nonanoic acid bound to the albumin fraction, with dihydrocapsaicin-hydrolysing enzyme activity found in jejunal tissue, indicating a partial first-pass effect during absorption. Condition category: normal nutrient_topic: Dihydrocapsaicin research collection; topical membership is not evidence of a direct clinical effect, and dihydrocapsaicin is recorded separately from capsaicin. plain_language: The gut wall snips the molecule in two, and one of the pieces is a small fatty acid that travels on in the blood. organism: Rat tissue_or_cell_type: Stomach, jejunum, ileum and portal blood experimental_model: In vivo and in situ gastrointestinal absorption studies in rats with tritiated dihydrocapsaicin limitations: Establishes both the route and the first metabolite by direct measurement in portal blood. A 1984 rat study using tritium label rather than mass spectrometry. exposure: Capsaicin and dihydrocapsaicin administered into stomach, jejunum and ileum, with 2,4-dinitrophenol and sodium cyanide as metabolic inhibitors evidence_span: {"source_cache": "artifacts/dihydrocapsaicin-research/6710495.abstract.txt", "locator": "Indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "a0a9a5cb2178f2b266fffe5efbd9580a0a1b5c03dd86b4bfe92b105194eb1f9b", "start_char": 0, "end_char": 1416, "text_sha256": "a0a9a5cb2178f2b266fffe5efbd9580a0a1b5c03dd86b4bfe92b105194eb1f9b"} [dhc-p6710495] Gastrointestinal absorption and metabolism of capsaicin and dihydrocapsaicin in rats. (1984). https://pubmed.ncbi.nlm.nih.gov/6710495/ DOI: 10.1016/0041-008x(84)90121-2