9-cis-Retinoic acid

≥98% (HPLC)

Alitretinoin, 9-cis-Tretinoin
Empirical Formula (Hill Notation):
CAS Number:
Molecular Weight:
MDL number:
PubChem Substance ID:

Quality Level

biological source



≥98% (HPLC)




HPLC: suitable


light yellow to yellow-orange


189-190 °C

storage temp.


SMILES string




InChI key


Gene Information

human ... RARA(5914), RARB(5915), RARG(5916), RXRA(6256), RXRB(6257), RXRG(6258)

Looking for similar products? Visit Product Comparison Guide

Related Categories


9-cis-Retinoic acid has been used:
  • as ligand for retinoid X receptor gamma (RXRγ) for inducing oligodendrocyte precursor cells differentiation and remyelination
  • as a medium component to study its effect on UDP-glucuronosyltransferases (UGT) expression in thyroid induced hepatocytes
  • to induce lymphangiogenesis in lymphatic endothelial cell


1 mg in ampule
Sealed ampule

Biochem/physiol Actions

Ligand for both the retinoic acid receptor (RAR) and the retinoid X receptor (RXR) that act as transcription factors to regulate the growth and differentiation of normal and malignant cells.
9-cis-Retinoic acid (9cRA) is an isomer of all-trans-retinoic acid (ATRA), both of which are lipid molecules synthesized from a common precursor, vitamin A. 9cRA is a potent agonist for retinoid X receptor (RXR) and retinoic acid receptor (RAR). It has neurotrophic functionality, promotes neuronal differentiation and may have therapeutic potential in treating stroke. It also regulates cytokine secretion and lymphocyte proliferation. 9cRA favors the dopamine cells survival and induces neuroprotection in neurodegenerative disorder like parkinson′s disease. It elicits anti-inflammatory function and stimulates mast cells and inhibits interleukin 4 and 5 expression levels. 9cRA is in clinical trial phase II for treating refractory cancer.

Other Notes

Tandem Mass Spectrometry data independently generated by Scripps Center for Metabolomics is available to view or download in PDF. R4643.pdf Tested metabolites are featured on Scripps Center for Metabolomics METLIN Metabolite Database. To learn more, visit sigma.com/metlin.


Exclamation markHealth hazard

Signal Word


Hazard Statements

Target Organs

Respiratory system

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves


NONH for all modes of transport

WGK Germany


Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

9-cis-Retinoic acid regulation of four UGT isoforms in hepatocytes from rats with various thyroid states
Haberkorn V, et al.
Pharmaceutical Research, 20(10), 1568-1573 (2003)
Yanyan Zhan et al.
Nature chemical biology, 4(9), 548-556 (2008-08-12)
Nuclear orphan receptor Nur77 has important roles in many biological processes. However, a physiological ligand for Nur77 has not been identified. Here, we report that the octaketide cytosporone B (Csn-B) is a naturally occurring agonist for Nur77. Csn-B specifically binds...
9-cis retinoic acid induces neurorepair in stroke brain
Yu SJ, et al.
Scientific reports, 7(1), 4512-4512 (2017)
A phase I trial and pharmacokinetic study of 9-cis-retinoic acid (ALRT1057) in pediatric patients with refractory cancer: a joint pediatric oncology branch, national cancer institute, and children?s cancer group study
Adamson PC, et al.
Clinical Cancer Research, 7(10), 3034-3039 (2001)
Early post-treatment with 9-cis retinoic acid reduces neurodegeneration of dopaminergic neurons in a rat model of Parkinson?s disease
Yin LH, et al.
BMC Neuroscience, 13(1), 120-120 (2012)
All-trans retinoic acid (RA, ATRA) is a pleiotropic activation factor that regulates genes associated with normal vertebrate cellular processes such as cell differentiation, cell proliferation, apoptosis, and embryonic development.
Read More
All-trans retinoic acid (RA, ATRA) is a pleiotropic activation factor that regulates genes associated with normal vertebrate cellular processes such as cell differentiation, cell proliferation, apoptosis, and embryonic development.
Read More
Related Content
We offer a variety of small molecule research tools, such as transcription factor modulators, inhibitors of chromatin modifying enzymes, and agonists/antagonists for target identification and validation in gene regulation research; a selection of these research tools is shown below.
Read More

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service

Social Media

LinkedIn icon
Twitter icon
Facebook Icon
Instagram Icon


Research. Development. Production.

We are a leading supplier to the global Life Science industry with solutions and services for research, biotechnology development and production, and pharmaceutical drug therapy development and production.

© 2021 Merck KGaA, Darmstadt, Germany and/or its affiliates. All Rights Reserved.

Reproduction of any materials from the site is strictly forbidden without permission.