diff --git a/api/api.py b/api/api.py
index fd7a295..3478018 100644
--- a/api/api.py
+++ b/api/api.py
@@ -118,7 +118,15 @@ async def search_structures(
 ) -> StructureResult:
     dict_items = get_structures_for_item(item, dm)
 
-    if item.modeEnum == "objects":
+    if item.structure.option.sdf:
+        return StructureResult(
+            ids=dict_items.keys(),
+            objects={sid: value for sid, value in dict_items.items()},
+            sdf=dm.get_structure_sdf_from_dict_of_sids(dict_items),
+            description="Structures matching the query",
+            count=len(dict_items),
+        )
+    elif item.modeEnum == "objects":
         return StructureResult(
             ids=dict_items.keys(),
             objects={sid: value for sid, value in dict_items.items()},
diff --git a/api/models.py b/api/models.py
index ba5bf01..8c7b990 100644
--- a/api/models.py
+++ b/api/models.py
@@ -110,12 +110,12 @@ class StructureObject(BaseModel):
     inchikey_no_stereo: str
     formula: str
     descriptors: Optional[Dict] = None
-    sdf: Optional[str] = None
 
 
 class StructureResult(BaseModel):
     ids: List[int]
     objects: Optional[Dict[int, StructureObject]] = None
+    sdf: Optional[str] = None
     count: Optional[int]
     description: Optional[str]
 
diff --git a/api/queries.py b/api/queries.py
index 5ad599e..926737e 100644
--- a/api/queries.py
+++ b/api/queries.py
@@ -137,8 +137,6 @@ def structures_from_structure_in_item(dm: DataModel, item: Item) -> set[int] | N
                     detail=f"The formula given is invalid: {formula}",
                 )
 
-        # TODO if sdf
-
         # TODO if desc(riptors)
 
         return structures
@@ -278,7 +276,7 @@ def get_structures_for_item(item: Item, dm: DataModel) -> dict[int, str]:
     )
 
     return dm.get_structure_object_from_dict_of_sids(
-        ids, item.structure.option.descriptors, item.structure.option.sdf
+        ids, item.structure.option.descriptors
     )
 
 
diff --git a/doc/api/schemas/structureObject.yaml b/doc/api/schemas/structureObject.yaml
index 95d1b35..cccafa7 100644
--- a/doc/api/schemas/structureObject.yaml
+++ b/doc/api/schemas/structureObject.yaml
@@ -30,11 +30,6 @@ properties:
       Molecular formula
     example: "C16H22O9"
     type: string
-  sdf:
-    description: |
-      SDF
-    example: "\n     RDKit          2D\n\n  1  0  0  0  0  0  0  0  0  0999 V2000\n    0.0000    0.0000    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\nM  END\n>  <WID>  (3) \n3\n\n"
-    type: string
   smiles:
     description: |
       SMILES (with stereochemistry)
diff --git a/doc/api/schemas/structureResult.yaml b/doc/api/schemas/structureResult.yaml
index 8a35d8e..3923f25 100644
--- a/doc/api/schemas/structureResult.yaml
+++ b/doc/api/schemas/structureResult.yaml
@@ -11,6 +11,11 @@ properties:
     type: array
   objects:
     $ref: "./structureObject.yaml"
+  sdf:
+    description: |
+      SDF
+    example: "\n     RDKit          2D\n\n  1  0  0  0  0  0  0  0  0  0999 V2000\n    0.0000    0.0000    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\nM  END\n>  <WID>  (3) \n3\n\n"
+    type: string
   count:
     description: |
       Count
diff --git a/model/data_model.py b/model/data_model.py
index bf338b4..b6d5796 100644
--- a/model/data_model.py
+++ b/model/data_model.py
@@ -166,7 +166,6 @@ def get_structure_object_from_dict_of_sids(
         self,
         sids: Iterable[int],
         descriptors: bool | dict = False,
-        sdf: bool = False,
     ) -> dict[int, StructureObject]:
         with self.storage.session() as session:
             if descriptors == True:
@@ -200,10 +199,6 @@ def get_structure_object_from_dict_of_sids(
                     .filter(Structures.id.in_(sids))
                     .all()
                 )
-            if sdf:
-                blocks = self.get_structure_sdf_from_dict_of_sids(sids)
-            else:
-                blocks = None
             if result:
                 return {
                     row.id: StructureObject(
@@ -214,7 +209,6 @@ def get_structure_object_from_dict_of_sids(
                         inchikey=row.inchikey,
                         inchikey_no_stereo=row.inchikey_no_stereo,
                         formula=row.formula,
-                        sdf=blocks,
                     )
                     for row in result
                 }
diff --git a/tests/test_api_structures.py b/tests/test_api_structures.py
index e7861c5..9c69f0c 100644
--- a/tests/test_api_structures.py
+++ b/tests/test_api_structures.py
@@ -115,11 +115,24 @@ async def test_search_structures_sdf(self, data_model):
         result = await search_structures(item=item, dm=data_model)
         assert result.count == 1
         assert (
-            result.objects[3].sdf
+            result.sdf
             == "\n     RDKit          2D\n\n  1  0  0  0  0  0  0  0  0  0999 V2000\n    0.0000    0.0000    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\nM  END\n>  <WID>  (3) \n3\n\n"
         )
 
-    # TODO test for multiple ones (SDF)
+    async def test_search_structures_sdf_multiple(self, data_model):
+        item = Item(
+            structure={
+                "molecule": "C([H])([H])([H])",
+                "option": {"sdf": True, "substructure_search": True},
+            },
+            limit=10,
+            modeEnum="objects",
+        )
+        result = await search_structures(item=item, dm=data_model)
+        assert (
+            result.sdf
+            == "\n     RDKit          2D\n\n  4  3  0  0  0  0  0  0  0  0999 V2000\n    0.0000    0.0000    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    1.2990    0.7500    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    2.5981   -0.0000    0.0000 N   0  0  0  0  0  0  0  0  0  0  0  0\n    1.2990    2.2500    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n  2  1  1  1\n  2  3  1  0\n  2  4  1  0\nM  END\n>  <WID>  (1) \n1\n\n\n     RDKit          2D\n\n  4  3  0  0  0  0  0  0  0  0999 V2000\n    0.0000    0.0000    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    1.2990    0.7500    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\n    2.5981   -0.0000    0.0000 N   0  0  0  0  0  0  0  0  0  0  0  0\n    1.2990    2.2500    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0\n  2  1  1  6\n  2  3  1  0\n  2  4  1  0\nM  END\n>  <WID>  (2) \n2\n\n\n     RDKit          2D\n\n  1  0  0  0  0  0  0  0  0  0999 V2000\n    0.0000    0.0000    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0\nM  END\n>  <WID>  (3) \n3\n\n"
+        )
 
     async def test_search_structures_by_substructure_limits(self, data_model):
         item = Item(