C8H4N2
128.13 g/mol
Pharmaceutical IntermediateWarning
Terephthalonitrile
CAS623-26-7EC210-783-2
Category
Pharmaceutical Intermediate
Compound Class
Aromatic
Primary Use
Pharmaceutical Intermediate
Terephthalonitrile, also known as 1,4-dicyanobenzene, is a chemical compound that exists in a crystalline alpha form. It is primarily used as a building block in the synthesis of pesticides and pharmaceuticals.
Pesticide intermediatePharmaceutical intermediateOccupational marker compound
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.
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Related Compounds
ReferenceSame Category
3-(dimethylamino)-1,2-propanediol
CAS623-57-4
pharmaceutical intermediate
ReferenceSame Category
Thymalfasin
CAS62304-98-7
pharmaceutical intermediate
ReferenceSame Category
Palmitoyl tripeptide-5 triflate
CAS623172-56-5
pharmaceutical intermediate
ReferenceSame Category
Tert-Butyl O,O-dimethylphosphonoacetate
CAS62327-21-3
pharmaceutical intermediate
Safety Reference
Warning
H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation
Customs Tariff Classification
The international HS code for Terephthalonitrile (CAS 623-26-7) is 2926.90.
HS code (international, 6-digit)
2926.90
EU CN code (8-digit)
2926 90 70
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
benzene-1,4-dicarbonitrile
InChIKey
BHXFKXOIODIUJO-UHFFFAOYSA-N
SMILES
C1=CC(=CC=C1C#N)C#N
Synonyms (33)
- 1,4-BENZENEDICARBONITRILE
- 1,4-BIS(CYANO)BENZENE
- 1,4-Benzendikarbonitril
- 1,4-Benzodinitrile
- 1,4-Dicyanobenzene
- 4-Cyanobenzonitrile
- DICYANOBENZENE, 1,4-
- Escitalopram Impurity 66
- Nitril kyseliny tereftalove
- P-BENZENEDICARBONITRILE
- Ppdn
- Tereftalodinitril
- Tereftalodinitril [Czech]
- Tereftalonitril
- Tereftalonitril [Czech]
- Terephthalic acid dinitrile
- Terephthalodinitril
- Terephthalodinitril [German]
- Terephthalodinitrile
- Terephthalonitrile
- benzene-1,4-dicarbonitrile
- benzol-1,4-dikohlenitrile
- p-Benzenedinitrile
- p-Cyanobenzonitrile
- p-Dicyanobenzene
- p-Phthalodinitrile
- p-Phthalonitrile
- para-dicyanobenzene
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