A1CSF

(1S,4E)-3-(difluoromethylidene)-4-[({3-hydroxy-2-methyl-5-[(phosphonooxy)methyl]pyridin-4-yl}methyl)imino]cyclopentane-1-carboxylic acid

Created:	2025-09-05
Last modified:	2026-07-22

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1 entries where A1CSF is found as a standalone ligand

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Chemical Details
Formal Charge	0
Atom Count	44
Chiral Atom Count	1
Bond Count	45
Aromatic Bond Count	6

2D diagram of A1CSF

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Chemical Component Summary
Name	(1S,4E)-3-(difluoromethylidene)-4-[({3-hydroxy-2-methyl-5-[(phosphonooxy)methyl]pyridin-4-yl}methyl)imino]cyclopentane-1-carboxylic acid
Systematic Name (OpenEye OEToolkits)	(1~{S},4~{E})-3-[bis(fluoranyl)methylidene]-4-[[2-methyl-3-oxidanyl-5-(phosphonooxymethyl)pyridin-4-yl]methylimino]cyclopentane-1-carboxylic acid
Formula	C₁₅ H₁₇ F₂ N₂ O₇ P
Molecular Weight	406.275
Type	NON-POLYMER

Chemical Descriptors
Type	Program	Version	Descriptor
SMILES	ACDLabs	14.52	Oc1c(C\N=C\2/CC(C\C/2=C(/F)F)C(=O)O)c(cnc1C)COP(=O)(O)O
SMILES	CACTVS	3.385	Cc1ncc(CO[P](O)(O)=O)c(CN=C2C[CH](CC2=C(F)F)C(O)=O)c1O
SMILES	OpenEye OEToolkits	3.1.0.0	Cc1c(c(c(cn1)COP(=O)(O)O)CN=C2CC(CC2=C(F)F)C(=O)O)O
Canonical SMILES	CACTVS	3.385	Cc1ncc(CO[P](O)(O)=O)c(CN=C2C[C@H](CC2=C(F)F)C(O)=O)c1O
Canonical SMILES	OpenEye OEToolkits	3.1.0.0	Cc1c(c(c(cn1)COP(=O)(O)O)C/N=C/2\C[C@H](CC2=C(F)F)C(=O)O)O
InChI	InChI	1.06	InChI=1S/C15H17F2N2O7P/c1-7-13(20)11(9(4-18-7)6-26-27(23,24)25)5-19-12-3-8(15(21)22)2-10(12)14(16)17/h4,8,20H,2-3,5-6H2,1H3,(H,21,22)(H2,23,24,25)/b19-12+/t8-/m0/s1
InChIKey	InChI	1.06	CGAUSXISDNYHHU-ARSGFDSNSA-N

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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.