A1C4C

5-[4-(2-aminoethyl)anilino]-4-chloro-2-methylpyridazin-3(2H)-one

Created:	2026-01-08
Last modified:	2026-09-16

Find Related PDB Entry
2 entries where A1C4C is found as a standalone ligand

Find related ligands: Help
Similar Ligands (Stereospecific) Similar Ligands (including Stereoisomers) Similar Ligands (Quick Screen) Similar Ligands (Substructure Stereospecific) Similar Ligands (Substructure including Stereoisomers)

Chemical Details
Formal Charge	0
Atom Count	34
Chiral Atom Count	0
Bond Count	35
Aromatic Bond Count	6

2D diagram of A1C4C

Toggle Hydrogen Toggle Labels

Chemical Component Summary
Name	5-[4-(2-aminoethyl)anilino]-4-chloro-2-methylpyridazin-3(2H)-one
Systematic Name (OpenEye OEToolkits)	5-[[4-(2-azanylethyl)phenyl]amino]-4-chloranyl-2-methyl-pyridazin-3-one
Formula	C₁₃ H₁₅ Cl N₄ O
Molecular Weight	278.737
Type	NON-POLYMER

Chemical Descriptors
Type	Program	Version	Descriptor
SMILES	ACDLabs	14.52	CN1N=CC(Nc2ccc(CCN)cc2)=C(Cl)C1=O
SMILES	CACTVS	3.385	CN1N=CC(=C(Cl)C1=O)Nc2ccc(CCN)cc2
SMILES	OpenEye OEToolkits	3.1.0.0	CN1C(=O)C(=C(C=N1)Nc2ccc(cc2)CCN)Cl
Canonical SMILES	CACTVS	3.385	CN1N=CC(=C(Cl)C1=O)Nc2ccc(CCN)cc2
Canonical SMILES	OpenEye OEToolkits	3.1.0.0	CN1C(=O)C(=C(C=N1)Nc2ccc(cc2)CCN)Cl
InChI	InChI	1.06	InChI=1S/C13H15ClN4O/c1-18-13(19)12(14)11(8-16-18)17-10-4-2-9(3-5-10)6-7-15/h2-5,8,17H,6-7,15H2,1H3
InChIKey	InChI	1.06	UOQAFGWMKNIVAR-UHFFFAOYSA-N

RCSB PDB is hosted by

RCSB PDB is a member of

RCSB Partners
Nucleic Acid Knowledgebase

CoreTrustSeal

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.