Name: Isotretinoin (13-cis retinoic acid)
Brand: Selleck Chemicals
SKU: S1379
Rating: 5 (12 reviews)

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Quality Control

Batch: Purity: 99.97%

99.97

Related Targets	Dehydrogenase HSP Transferase P450 (e.g. CYP17) PDE phosphatase PPAR Vitamin Carbohydrate Metabolism Mitochondrial Metabolism
Other Hydroxylase Inhibitors	Ro 61-8048 Meldonium 4-Chloro-DL-phenylalanine Nepicastat (SYN-117) HCl 2-Thiouracil (R)-Nepicastat HCl H-Tyr(3-I)-OH 1,4-DPCA LP-533401

Chemical Information, Storage & Stability

Molecular Weight	300.44	Formula	C₂₀H₂₈O₂	Storage (From the date of receipt)	3 years-20°Cpowder
CAS No.	4759-48-2	Download SDF		Storage of Stock Solutions	1 year-80°Cin solvent 1 month-20°Cin solvent

Solubility

In vitro
Batch:

DMSO : 60 mg/mL (199.7 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO.)

Water : Insoluble

Ethanol : Insoluble

Molarity Calculator

Mass	Concentration	Volume	Molecular Weight
=	×	×

Dilution Calculator Molecular Weight Calculator

In vivo Batch:
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.
Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.
Clear solution	5%DMSO 1 40%PEG300 2 5%Tween80 3 50%ddH2O Validated by Selleck labs. Should you need adjustments to this formulation, contact our sales team for custom testing.	1.550mg/ml (5.16mM)	Taking the 1 mL working solution as an example, add 50 μL of 31 mg/ml clarified DMSO stock solution to 400 μL of PEG300, mix evenly to clarify it; add 50 μL of Tween80 to the above system, mix evenly to clarify; then continue to add 500 μL of ddH2O to adjust the volume to 1 mL. The mixed solution should be used immediately for optimal results.
Clear solution	5% DMSO 1 95% Corn oil Validated by Selleck labs. Should you need adjustments to this formulation, contact our sales team for custom testing.	3.000mg/ml (9.99mM)	Taking the 1 mL working solution as an example, add 50 μL of 60 mg/ml clear DMSO stock solution to 950 μL of corn oil and mix evenly. The mixed solution should be used immediately for optimal results.

In vivo Formulation Calculator (Clear solution)

Step 1: Enter information below (Recommended: An additional animal making an allowance for loss during the experiment)

Dosage: mg/kg Average weight of animals: g Dosing volume per animal:μL Number of animals:

Step 2: Enter the in vivo formulation (This is only the calculator, not formulation. Please contact us first if there is no in vivo formulation at the solubility Section.)

% DMSO + % + % Tween 80 + % ddH₂O

%DMSO+ %

Calculation results:

Working concentration: mg/ml;

Method for preparing DMSO master liquid: mg drug pre-dissolved in μL DMSO ( Master liquid concentration mg/mL, Please contact us first if the concentration exceeds the DMSO solubility of the batch of drug. )

Method for preparing in vivo formulation: Take μL DMSO master liquid, next addμL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH₂O, mix and clarify.

Method for preparing in vivo formulation: Take μL DMSO master liquid, next add μL Corn oil, mix and clarify.

Note: 1. Please make sure the liquid is clear before adding the next solvent.
2. Be sure to add the solvent(s) in order. You must ensure that the solution obtained, in the previous addition, is a clear solution before proceeding to add the next solvent. Physical methods such as vortex, ultrasound or hot water bath can be used to aid dissolving.

Mechanism of Action

Targets/IC₅₀/Ki	hydroxylase
In vitro	Isotretinoin (13-cis retinoic acid) directly interferes with the development of cranial neural crest cells. This compound selectively affects neural crest cells by decreasing their cell-substratum adhesion.
In vivo	Isotretinoin (13-cis retinoic acid) (500 ng/mL) and its main metabolite in the human, 4-oxo-isotretinoin, induce malformations similar to those seen in vivo. It impairs explicit memory in Stage 2, but retention tests one month after exposure ended, indicated recovery from this explicit memory impairment and evidence of enhanced implicit memory in the 10 mg and 15 mg ISO rats. This compound slows the recovery of rod signaling after exposure to an intense bleaching light, and that rhodopsin regeneration is markedly slowed. It is also found to protect rat photoreceptors from light-induced damage. Isotretinoin blocks the formation of A2E biochemically and the accumulation of lipofuscin pigments by electron microscopy. It also blocks the slower, age-dependent accumulation of lipofuscin in wild-type mice.
References	[1] https://pubmed.ncbi.nlm.nih.gov/3464614/ [2] https://pubmed.ncbi.nlm.nih.gov/3476321/ [3] https://pubmed.ncbi.nlm.nih.gov/18760297/ [4] https://pubmed.ncbi.nlm.nih.gov/11172037/ [5] https://pubmed.ncbi.nlm.nih.gov/12671074/

Clinical Trial Information

(data from https://clinicaltrials.gov, updated on 2026-07-14)

NCT Number	Recruitment	Conditions	Sponsor/Collaborators	Start Date	Phases
NCT06942039	RECRUITING	CNS Embryonal Tumor; CNS, Medulloblastoma; Atypical Teratoid Rhabdoid Tumor; Medulloblastoma, Childhood; Medulloblastoma, Group 3; Medulloblastoma, Group 4; Pineoblastoma; Neuroblastoma; Embryonal Tumor With Multilayered Rosettes; Embryonal Tumor With Abundant Neuropil and True Rosettes; Ependymoblastoma; Medulloepithelioma; CNS Embryonal Tumor With Rhabdoid Features; CNS Embryonal Tumor, Nos	C17 Council	2025-09-23	EARLY_PHASE1
NCT03126916	RECRUITING	Ganglioneuroblastoma; Ganglioneuroblastoma, Nodular; Neuroblastoma	Children's Oncology Group	2018-05-14	PHASE3
NCT06172296	RECRUITING	Ganglioneuroblastoma, Nodular; Neuroblastoma	National Cancer Institute (NCI)	2024-04-19	PHASE3
NCT07629167	NOT_YET_RECRUITING	Acneiform Drug Eruption; Acneiform Eruptions	University of California, San Francisco	2026-08-30	PHASE2
NCT06698263	NOT_YET_RECRUITING	Men with Infertility	University Hospital, Strasbourg, France	2025-03-01	PHASE4
NCT07481370	ENROLLING_BY_INVITATION	Oligospermia; Azoospermia, Nonobstructive; Infertility	University of Nebraska	2026-04-13	PHASE2

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Isotretinoin (13-cis retinoic acid) Hydroxylase Activator

Molecular Weight: 300.44