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 11 results
Search term:
MF = 'C_{21}H_{18}N_{3}S'
ID
Structure
Molecular Formula
Molecular Weight
# of Data Sources
# of References
# of PubMed
# of RSC
438747
zoom
C
21
H
18
N
3
S
344.4522
10
5
0
0
1286118
zoom
C
21
H
18
N
3
S
344.4522
7
3
0
0
2060237
zoom
C
21
H
18
N
3
S
344.45272
4
1
0
0
3673133
zoom
C
21
H
18
N
3
S
344.45272
3
1
0
0
444552
zoom
C
21
H
18
N
3
S
344.4522
2
2
0
0
2005454
zoom
C
21
H
18
N
3
S
344.45272
2
1
0
0
1288360
zoom
C
21
H
18
N
3
S
344.4522
1
1
0
0
2005453
zoom
C
21
H
18
N
3
S
344.45272
1
1
0
0
8940099
zoom
C
21
H
18
N
3
S
344.4522
1
1
0
0
9445716
zoom
C
21
H
18
N
3
S
344.4522
1
1
0
0
26374784
zoom
C
21
H
18
N
3
S
344.4522
1
1
0
0
Advertisement
Advertisement
Spotlight
Advertisement