Jump to main content
Jump to site nav
Home
About us
Membership & professional community
Campaigning & outreach
Journals, books & databases
Teaching & learning
News & events
Locations & contacts
Home
About us
Web APIs
Help
Sign in
ChemSpider
Search and share chemistry
Simple
Structure
Advanced
History
Molecular Formula:
Define range intervals using parentheses.
E.g. C7H(10-14)O(0-4)
Molecular Weight:
to
±
(example: 123 ± 1)
min/max
+/-
Nominal Mass:
to
±
-2H+
-H+
+H+
+2H+
min/max
+/-
Average Mass:
to
±
M+CH3CNH
M+CH3OH2
M+.
M+K
M+Na
M+NH4
M+H
M-H
M+acetate
M-.
M+Cl
-e
+e
min/max
+/-
Monoisotopic Mass:
to
±
M+CH3CNH
M+CH3OH2
M+.
M+K
M+Na
M+NH4
M+H
M-H
M+acetate
M-.
M+Cl
-e
+e
min/max
+/-
Search
Search Hits Limit:
100
1000
10000
Filter
Single/Multi-component
Search Any
Search Single-Component Structures Only
Search Multi-Component Structures Only
Isotopically Labeled
Search Any
Search Isotopically Labeled Structures Only
Disregard Isotopically Labeled Structures
Additional Filters
Filter only those having analytical data
Found 121 results
Search term:
MF = 'C_{18}H_{23}N_{2}O_{4}'
1
2
3
4
5
ID
Structure
Molecular Formula
Molecular Weight
# of Data Sources
# of References
# of PubMed
# of RSC
1635497
zoom
C
18
H
23
N
2
O
4
331.3857
2
2
0
0
1520814
- 1/1 defined
zoom
C
18
H
23
N
2
O
4
331.3868
2
1
0
0
1520815
- 1/1 defined
zoom
C
18
H
23
N
2
O
4
331.3868
2
1
0
0
8512208
- 3/3 defined
zoom
C
18
H
23
N
2
O
4
331.3857
2
1
0
0
9934003
zoom
C
18
H
23
N
2
O
4
331.3857
2
1
0
0
1395058
zoom
C
18
H
23
N
2
O
4
331.3857
1
1
0
0
1567496
- 1/1 defined
zoom
C
18
H
23
N
2
O
4
331.3857
1
1
0
0
1567498
- 1/1 defined
zoom
C
18
H
23
N
2
O
4
331.3857
1
1
0
0
1588609
zoom
C
18
H
23
N
2
O
4
331.3857
1
1
0
0
1619722
zoom
C
18
H
23
N
2
O
4
331.3857
1
1
0
0
1643294
zoom
C
18
H
23
N
2
O
4
331.3857
1
1
0
0
1762768
zoom
C
18
H
23
N
2
O
4
331.3857
1
1
0
0
2648812
zoom
C
18
H
23
N
2
O
4
331.3857
1
1
0
0
2662222
- 0/2 defined
zoom
C
18
H
23
N
2
O
4
331.3857
1
1
0
0
2789497
zoom
C
18
H
23
N
2
O
4
331.38622
1
1
0
0
3263996
zoom
C
18
H
23
N
2
O
4
331.3857
1
1
0
0
3283721
- 0/1 defined
zoom
C
18
H
23
N
2
O
4
331.3857
1
1
0
0
3293015
- 0/1 defined
zoom
C
18
H
23
N
2
O
4
331.3857
1
1
0
0
3377775
zoom
C
18
H
23
N
2
O
4
331.38622
1
1
0
0
3929984
zoom
C
18
H
23
N
2
O
4
331.3857
1
1
0
0
1
2
3
4
5
Advertisement
Advertisement
Spotlight
Advertisement