C20H28O2
300.4 g/mol
APIDanger
Retinoic acid
CAS302-79-4EC206-129-0
Category
API
Compound Class
Organic Acid
Primary Use
Pharmaceutical Raw Material
Retinoic acid is a compound derived from vitamin A that functions as an active pharmaceutical ingredient. According to expert evaluation, it is associated with developmental toxicity risks.
antineoplastic agentkeratolytic agent
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
Restricted or banned substances
Substances on this list are banned or restricted under the named regulation. This page is a compliance reference — verify your obligations under applicable law.
Relevant lists:California Proposition 65
CAS 302-79-4
Related Compounds
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Referencestereoisomer of
(11-CIS,13-CIS)-RETINOIC ACID
CAS3555-80-4
pharmaceutical raw material
Referencestereoisomer of
Isotretinoin
CAS4759-48-2
pharmaceutical raw material
Referencestereoisomer of
Alitretinoin
CAS5300-03-8
pharmaceutical raw material
Safety Reference
Danger
H302Harmful if swallowed
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
H360May damage fertility or the unborn child
H400Very toxic to aquatic life
H410Very toxic to aquatic life with long lasting effects
H411Toxic to aquatic life with long lasting effects
H401Toxic to aquatic life
Regulatory Compliance1
- California Proposition 65USRegulation
Customs Tariff Classification
The international HS code for Retinoic acid (CAS 302-79-4) is 2936.21.
HS code (international, 6-digit)
2936.21
EU CN code (8-digit)
2936 21 00
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
Identifiers
IUPAC Name
(2E,4E,6E,8E)-3,7-dimethyl-9-(2,6,6-trimethylcyclohexen-1-yl)nona-2,4,6,8-tetraenoic acid
InChIKey
SHGAZHPCJJPHSC-YCNIQYBTSA-N
SMILES
CC1=C(C(CCC1)(C)C)/C=C/C(=C/C=C/C(=C/C(=O)O)/C)/C
Synonyms (155)
- ALTRENO
- ATRA
- Isotretinoin EP Impurity A; Tretinoin
- Tretinoin (JAN/USP/INN)
- Tretinoin, European Pharmacopoeia (EP)
- Tretinoin, United States Pharmacopeia (USP)
- Tretinoina [INN-Spanish]
- Tretinoine [INN-French]
- Tretinoino [INN-Spanish]
- Tretinoinum [INN-Latin]
- 11-cis Retinoic Acid
- 11-cis,13-cis-Retinoic Acid
- 1cbr
- 1n4h
- 9-cis-retinoic acid (9cRA)
- A-Acido (Argentina)
- A-Vitaminsyre
- A-Vitaminsyre [Denmark]
- Aberel
- Aberela [Norway]
- Acid, Retinoic
- Acid, Vitamin A
- Acid, all-trans-Retinoic
- Acid, beta-all-trans-Retinoic
- Acid, trans-Retinoic
- Acide retinoique
- Acnavit
- Acnavit [Denmark]
- Airol
- Aknefug
- Aknoten
- Altreno (0.05% lotion)
- Atralin
- Avita (0.025% gel)
- Avita (TN)
- Avitoin [Norway]
- Betarretin
- Cordes VAS [Germany]
- Cordes vas
- DERMAWERX ZMT PAK
- Dermairol
- Effederm [France]
- Epi-aberel
- Eudyna
- ISOTRETINOIN IMPURITY A
- Kerlocal
- Nexret
- Oristar rna
- Potassium Salt, Tretinoin
- Refissa
- Renova
- Renova (0.02% cream)
- Renova (TN)
- Retacnyl
- Retin A
- Retin A (TN)
- Retin-A Micro
- Retinoate
- Retinoic Acid(Tretinoin)
- Retinoic acid
- Retinoic acid (GMP)
- Retinoic acid (Standard)
- Retinoic acid, all-trans-
- Retinoic acid, cis-
- Retinova
- Retionic acid
- Retisol-A
- Ro 1-5488
- SOLAGE COMPONENT TRETINOIN
- Salt, Tretinoin Potassium
- Salt, Tretinoin Sodium
- Salt, Tretinoin Zinc
- Sodium Salt, Tretinoin
- Stieva-A
- TRETINOIN [MART.]
- TRI-LUMA COMPONENT TRETINOIN
- TWYNEO COMPONENT TRETINOIN
- Tretin M
- Tretin-X
- Tretinion
- Tretinoin (Microsphere)
- Tretinoin - Bio-X trade mark
- Tretinoin CRS
- Tretinoin Cream
- Tretinoin, all-trans-
- Tretinoina
- Tretinoine
- Tretinoine (French)
- Tretinoino
- Tretinoinum
- US10188615, at-RA
- VELTIN COMPONENT TRETINOIN
- Vesanoid
- Vesanoid (TN) (Roche)
- Vesnaroid
- Vitamin A acid
- Vitamin A acid, all-trans-
- Vitamin A1 acid, all-trans-
- Vitamin a acid, trans-
- Vitamin-A-sA currencyure
- Vitamine A acid
- ZIANA COMPONENT TRETINOIN
- Zinc Salt, Tretinoin
- [3H]RA
- [3H]Retinoic acid
- [3H]Vitamin A acid
- [3H]tretinoin
- acide retinoique (French)
- all-(E)-Retinoate
- all-(E)-Retinoic acid
- all-trans-Retinoic acid
- all-trans-Tretinoin
- all-trans-Vitamin A acid
- all-trans-Vitamin A1 acid
- all-trans-b-Retinoic acid
- all-trans-beta-Retinoic acid
- beta all trans Retinoic Acid
- beta-Ra
- beta-Retinoate
- beta-Retinoic acid
- cis-Retinoic acid
- trans-Retinoate
- trans-Retinoic acid
- tretinoin
- tretinoine (French) (EINECS)