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 184 results
Search term:
MF = 'C_{4}H_{5}N_{3}O'
1
2
3
4
5
ID
Structure
Molecular Formula
Molecular Weight
# of Data Sources
# of References
# of PubMed
# of RSC
577
zoom
C
4
H
5
N
3
O
111.102
202
6107
15824
1762
60309
zoom
C
4
H
5
N
3
O
111.102
145
358
56
91
64106
zoom
C
4
H
5
N
3
O
111.102
119
185
0
12
10694072
zoom
C
4
H
5
N
3
O
111.102
110
148
0
1
10609697
zoom
C
4
H
5
N
3
O
111.102
90
147
289
5
282828
zoom
C
4
H
5
N
3
O
111.102
88
116
0
1
134776
zoom
C
4
H
5
N
3
O
111.102
79
108
2
0
238286
zoom
C
4
H
5
N
3
O
111.102
68
89
0
0
1013248
zoom
C
4
H
5
N
3
O
111.102
63
92
0
0
9369374
zoom
C
4
H
5
N
3
O
111.102
63
78
1
1
62031
- 0/2 defined
zoom
C
4
H
5
N
3
O
111.102
56
80
1
0
117781
zoom
C
4
H
5
N
3
O
111.102
54
131
0
1
11239945
zoom
C
4
H
5
N
3
O
111.102
48
63
0
0
14976770
zoom
C
4
H
5
N
3
O
111.102
48
65
0
0
11210205
zoom
C
4
H
5
N
3
O
111.102
42
51
0
0
10241999
zoom
C
4
H
5
N
3
O
111.102
39
54
0
0
252918
zoom
C
4
H
5
N
3
O
111.102
38
47
0
23
13226179
zoom
C
4
H
5
N
3
O
111.102
36
45
0
0
13583288
zoom
C
4
H
5
N
3
O
111.102
36
47
0
1
25518
zoom
C
4
H
5
N
3
O
111.102
35
43
0
16
1
2
3
4
5
Advertisement
Advertisement
Spotlight
Advertisement