C9H7N7O2S
277.27 g/mol
APIDanger
Azathioprine
CAS446-86-6EC207-175-4
Category
API
Compound Class
Heterocycle
Primary Use
Pharmaceutical Raw Material
Azathioprine is an immunosuppressive active pharmaceutical ingredient used in pharmaceutical manufacturing. It is recognized as a group 1 human carcinogen by the International Agency for Research on Cancer.
Pharmaceutical raw material for immunosuppressive therapyCompound used in transplant rejection prevention researchIntermediate for immunosuppressive drug manufacturing
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 446-86-6
Related Compounds
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GRF 1-29 (CJC1295)
CAS446262-90-4
pharmaceutical raw material
ReferenceSame Category
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ReferenceSame Category
Angiotensin II
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Safety Reference
Danger
H302Harmful if swallowed
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
H340May cause genetic defects
H350May cause cancer
H360May damage fertility or the unborn child
H317May cause an allergic skin reaction
H370Causes damage to organs
H372Causes damage to organs through prolonged or repeated exposure
Regulatory Compliance1
- California Proposition 65USRegulation
Customs Tariff Classification
The international HS code for Azathioprine (CAS 446-86-6) is 2933.59.
HS code (international, 6-digit)
2933.59
EU CN code (8-digit)
2933 59 95
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
6-(3-methyl-5-nitroimidazol-4-yl)sulfanyl-7H-purine
InChIKey
LMEKQMALGUDUQG-UHFFFAOYSA-N
SMILES
CN1C=NC(=C1SC2=NC=NC3=C2NC=N3)[N+](=O)[O-]
Synonyms (72)
- Azathioprine (JP18/USP/INN)
- Azathioprine, European Pharmacopoeia (EP)
- Azathioprine, United States Pharmacopeia (USP)
- Azathioprine, meets USP testing specifications
- Azathioprinum [INN-Latin]
- Azatioprina [INN-Spanish]
- AZATHIOPRINE [MART.]
- Azamun
- Azamun [Czech]
- Azamune
- Azanin
- Azapress
- Azasan
- Azasan (TN)
- Azathioprin
- Azathioprine (Azasan, Imuran)
- Azathioprine (Standard)
- Azathioprine CRS
- Azathioprine RS
- Azathioprinum
- Azathiopurine
- Azatioprin
- Azatioprina
- Azoran
- Azothioprin
- Azothioprine
- BW 57-322
- Berkaprine
- Ccucol
- Immunoprin 50
- Immuran
- Imuran
- Imuran (TN)
- Imurek
- Imurel
- Jayempi
- Jayempi (TN)
- Kentaprine
- Muran
- Oprisine 50
- Rorasul
- Sodium, Azathioprine
- azanine
- azathioprine