diff --git a/api/tests/integration/ref/rendering/basic.py.out b/api/tests/integration/ref/rendering/basic.py.out
index dddc112d3f..9d4e63ae14 100644
--- a/api/tests/integration/ref/rendering/basic.py.out
+++ b/api/tests/integration/ref/rendering/basic.py.out
@@ -22,3 +22,5 @@ bond-length-options-3.png rendering status: OK
 smart-layout-crown.png rendering status: OK
 ****** Nameless S-Group *****
 sa-mono.png rendering status: OK
+issue 2746 incorrect phosphorus valence
+incorrect_phosphorus_valence_2746.png rendering status: OK
diff --git a/api/tests/integration/tests/rendering/basic.py b/api/tests/integration/tests/rendering/basic.py
index 7cc904239e..a5922f87a9 100644
--- a/api/tests/integration/tests/rendering/basic.py
+++ b/api/tests/integration/tests/rendering/basic.py
@@ -162,6 +162,16 @@
 renderer.renderToFile(mol, joinPathPy("out/sa-mono.png", __file__))
 print(checkImageSimilarity("sa-mono.png"))
 
+print("issue 2746 incorrect phosphorus valence")
+indigo.resetOptions()
+indigo.setOption("render-output-format", "png")
+fname = "incorrect_phosphorus_valence_2746"
+png_fname = fname + ".png"
+cdxml_fname = joinPathPy("molecules/%s.cdxml" % fname, __file__)
+mol = indigo.loadMoleculeFromFile(cdxml_fname)
+renderer.renderToFile(mol, joinPathPy("out/" + png_fname, __file__))
+print(checkImageSimilarity(png_fname))
+
 if isIronPython():
     renderer.Dispose()
     indigo.Dispose()
diff --git a/api/tests/integration/tests/rendering/molecules/incorrect_phosphorus_valence_2746.cdxml b/api/tests/integration/tests/rendering/molecules/incorrect_phosphorus_valence_2746.cdxml
new file mode 100644
index 0000000000..259d3bf6e6
--- /dev/null
+++ b/api/tests/integration/tests/rendering/molecules/incorrect_phosphorus_valence_2746.cdxml
@@ -0,0 +1,389 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<!DOCTYPE CDXML SYSTEM "https://static.chemistry.revvitycloud.com/cdxml/CDXML.dtd" >
+<CDXML
+ CreationProgram="ChemDraw 23.1.1.3"
+ Name="phosphorus_valence.cdxml"
+ BoundingBox="227.74 164.23 296.28 222.75"
+ WindowPosition="0 0"
+ WindowSize="0 0"
+ WindowIsZoomed="yes"
+ FractionalWidths="yes"
+ InterpretChemically="yes"
+ ShowAtomQuery="yes"
+ ShowAtomStereo="no"
+ ShowAtomEnhancedStereo="yes"
+ ShowAtomNumber="no"
+ ShowResidueID="no"
+ ShowBondQuery="yes"
+ ShowBondRxn="yes"
+ ShowBondStereo="no"
+ ShowTerminalCarbonLabels="no"
+ ShowNonTerminalCarbonLabels="no"
+ HideImplicitHydrogens="no"
+ LabelFont="3"
+ LabelSize="10"
+ LabelFace="96"
+ CaptionFont="20"
+ CaptionSize="12"
+ HashSpacing="2.70"
+ MarginWidth="2"
+ LineWidth="1"
+ BoldWidth="4"
+ BondLength="30"
+ BondSpacing="12"
+ ChainAngle="120"
+ LabelJustification="Auto"
+ CaptionJustification="Left"
+ AminoAcidTermini="HOH"
+ ShowSequenceTermini="yes"
+ ShowSequenceBonds="yes"
+ ShowSequenceUnlinkedBranches="no"
+ ResidueWrapCount="40"
+ ResidueBlockCount="10"
+ PrintMargins="36 36 36 36"
+ MacPrintInfo="00030000025802580000000013401908FFB4FFA013A019680365052803FC00020000025802580000000013401908000100000064000000010001010100000001270F000100010000000000000000000000000002001901900000000000600000000000000000000100000000000000000000000000000000"
+ ChemPropName=""
+ ChemPropFormula="Chemical Formula: "
+ ChemPropExactMass="Exact Mass: "
+ ChemPropMolWt="Molecular Weight: "
+ ChemPropMOverZ="m/z: "
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+ ChemPropBoilingPt="Boiling Point: "
+ ChemPropMeltingPt="Melting Point: "
+ ChemPropCritTemp="Critical Temp: "
+ ChemPropCritPres="Critical Pres: "
+ ChemPropCritVol="Critical Vol: "
+ ChemPropGibbs="Gibbs Energy: "
+ ChemPropLogP="Log P: "
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+ ChemPropHenry="Henry&apos;s Law: "
+ ChemPropEForm="Heat of Form: "
+ ChemProptPSA="tPSA: "
+ ChemPropCLogP="CLogP: "
+ ChemPropCMR="CMR: "
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+ ChemPropFragmentLabel=""
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diff --git a/api/tests/integration/tests/rendering/ref/linux/incorrect_phosphorus_valence_2746.png b/api/tests/integration/tests/rendering/ref/linux/incorrect_phosphorus_valence_2746.png
new file mode 100644
index 0000000000..a8503170dc
Binary files /dev/null and b/api/tests/integration/tests/rendering/ref/linux/incorrect_phosphorus_valence_2746.png differ
diff --git a/api/tests/integration/tests/rendering/ref/mac/incorrect_phosphorus_valence_2746.png b/api/tests/integration/tests/rendering/ref/mac/incorrect_phosphorus_valence_2746.png
new file mode 100644
index 0000000000..a8503170dc
Binary files /dev/null and b/api/tests/integration/tests/rendering/ref/mac/incorrect_phosphorus_valence_2746.png differ
diff --git a/api/tests/integration/tests/rendering/ref/win/incorrect_phosphorus_valence_2746.png b/api/tests/integration/tests/rendering/ref/win/incorrect_phosphorus_valence_2746.png
new file mode 100644
index 0000000000..a8503170dc
Binary files /dev/null and b/api/tests/integration/tests/rendering/ref/win/incorrect_phosphorus_valence_2746.png differ
diff --git a/core/render2d/src/render_internal.cpp b/core/render2d/src/render_internal.cpp
index 2655125171..1accc60150 100644
--- a/core/render2d/src/render_internal.cpp
+++ b/core/render2d/src/render_internal.cpp
@@ -866,6 +866,7 @@ void MoleculeRenderInternal::_prepareSGroups(bool collapseAtLeastOneSuperatom)
                                 int neighboringBondID = v.neiEdge(j), bondID = -1;
                                 if (mol.findEdgeIndex(neighboringAtomID, superAtomID) < 0)
                                 {
+                                    int oldBondMappingInvPosition = _bondMappingInv.at(neighboringBondID);
                                     if (mol.isQueryMolecule())
                                     {
                                         QueryMolecule& qm = mol.asQueryMolecule();
@@ -874,13 +875,16 @@ void MoleculeRenderInternal::_prepareSGroups(bool collapseAtLeastOneSuperatom)
                                     else
                                     {
                                         Molecule& amol = mol.asMolecule();
+                                        int oldBondTopology = amol.getBondTopology(neighboringBondID);
+                                        int oldBondDirection = amol.getBondDirection(neighboringBondID);
+                                        amol.removeBond(neighboringBondID);
                                         bondID = amol.addBond(neighboringAtomID, superAtomID, amol.getBondOrder(neighboringBondID));
-                                        amol.setEdgeTopology(bondID, amol.getBondTopology(neighboringBondID));
-                                        amol.setBondDirection(bondID, mol.getBondDirection(neighboringBondID));
+                                        amol.setEdgeTopology(bondID, oldBondTopology);
+                                        amol.setBondDirection(bondID, oldBondDirection);
                                     }
                                     if (_bondMappingInv.find(bondID) != _bondMappingInv.end())
                                         _bondMappingInv.erase(bondID);
-                                    _bondMappingInv.emplace(bondID, _bondMappingInv.at(neighboringBondID));
+                                    _bondMappingInv.emplace(bondID, oldBondMappingInvPosition);
                                 }
                             }
                         }