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Basic Searches
Searches without any special characters (listed below) will return items that contain the exact value(s) entered in the search field. This means that searching for "ASPIRIN CALCIUM" won't return any items that have "ASPIRIN GLYCINE CALCIUM" because the search term doesn't match exactly.
Boolean Operators
OR - searches with terms separated by " OR " will return items that contain any of the terms in the search.
Example: "ASPIRIN" OR "CALCIUM" will return items that have strings like "ASPIRIN GLYCINE" and "GLYCINE CALCIUM" because they contain at least one of the terms in the search.

AND - searches with terms separated by " AND " will return items that contain all the terms in the search.
Example: "ASPIRIN" AND "CALCIUM" won't return items that have strings "ASPIRIN GLYCINE" and "GLYCINE CALCIUM" because neither contain both terms, but it will return "ASPIRIN GLYCINE CALCIUM" because it contains both search terms.
Query Builder
version 2.7.1
Substance Class Chemical
Record UNII
L69P3N2EVQ
Record Status Validated
Record Version
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Details

Stereochemistry ACHIRAL
Molecular Formula C5H4N4O
Molecular Weight 136.1117
Optical Activity NONE
Defined Stereocenters 0 / 0
E/Z Centers 0
Charge 0
Hide Audit Info Show Audit Info
Created by admin on Thu Mar 18 17:40:54 EDT 2021
Edited by admin on Thu Mar 18 17:40:54 EDT 2021
Structure of 1,6-DIHYDROPYRAZOLO(4,3-D)PYRIMIDIN-7-ONE
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Systematic Names:

  • None recorded
Hide SMILES / InChI Show SMILES / InChI

SMILES

c1c2c(c(=O)[nH]cn2)n[nH]1

InChI

JFZSDNLQDTYVEE-UHFFFAOYSA-N
InChI=1S/C5H4N4O/c10-5-4-3(1-8-9-4)6-2-7-5/h1-2H,(H,8,9)(H,6,7,10)
Related Record Type
Structure of ALTERNATIVE DEFINITION for [1,6-DIHYDROPYRAZOLO(4,3-D)PYRIMIDIN-7-ONE]
Alternative Definition
Created by admin on Thu Mar 18 17:40:54 EDT 2021 , Edited by admin on Thu Mar 18 17:40:54 EDT 2021
Name Type Language Details Access References
1,6-DIHYDROPYRAZOLO(4,3-D)PYRIMIDIN-7-ONE
Systematic Name
English  
NSC-79301
Code
English  
7H-PYRAZOLO(4,3-D)PYRIMIDIN-7-ONE, 2,6-DIHYDRO-
Systematic Name
English  
7-KETOPYRAZOLO(4,3-D)PYRIMIDINE
Systematic Name
English  
6H-PYRAZOLO(4,3-D)PYRIMIDIN-7-OL
Systematic Name
English  
1H-PYRAZOLO(4,3-D)PYRIMIDIN-7-OL
Systematic Name
English  
1,4-DIHYDROPYRAZOLO(4,3-D)PYRIMIDIN-7-ONE
Systematic Name
English  
Code System Code Type Description Access References
CAS
1797409-86-9
Created by admin on Thu Mar 18 17:40:54 EDT 2021 , Edited by admin on Thu Mar 18 17:40:54 EDT 2021
ALTERNATIVE
CAS
39464-16-9
Created by admin on Thu Mar 18 17:40:54 EDT 2021 , Edited by admin on Thu Mar 18 17:40:54 EDT 2021
ALTERNATIVE
CAS
13877-55-9
Created by admin on Thu Mar 18 17:40:54 EDT 2021 , Edited by admin on Thu Mar 18 17:40:54 EDT 2021
PRIMARY
EPA CompTox
13877-55-9
Created by admin on Thu Mar 18 17:40:54 EDT 2021 , Edited by admin on Thu Mar 18 17:40:54 EDT 2021
PRIMARY
FDA UNII
L69P3N2EVQ
Created by admin on Thu Mar 18 17:40:54 EDT 2021 , Edited by admin on Thu Mar 18 17:40:54 EDT 2021
PRIMARY
PUBCHEM
135460353
Created by admin on Thu Mar 18 17:40:54 EDT 2021 , Edited by admin on Thu Mar 18 17:40:54 EDT 2021
PRIMARY
Note Access References 
[Validation]WARNING:alternative definition not found NO NAME
Created Thu Mar 18 17:40:54 EDT 2021
Created By admin
Last Edited Thu Mar 18 17:40:54 EDT 2021
Last Edited By admin
Index Source Text / Citation Source Type Tags Date Accessed File Access
1 CHEMID SRS NOMEN
2 dump-public-2021-03-17_UPDATED.gsrs BATCH_IMPORT Thu Mar 18 17:40:52 EDT 2021
3 STN STN (SCIFINDER)
4 SRS CODE IMPORT SRS NOMEN Fri Apr 28 15:43:58 EDT 2017
5 WEBSITE WEBSITE NOMEN PUBLIC_DOMAIN_RELEASE
6 CHEMID CHEMID NOMEN
7 GSRS System-generated Validation messages VALIDATION_MESSAGE Thu Mar 18 17:40:53 EDT 2021
8 System generated SYSTEM
9 STN STN (SCIFINDER) PUBLIC_DOMAIN_RELEASE

Version

Version Comments

Editor

Change Date

13
admin
Thu Mar 18 13:40:54 EDT 2021
Molecular Formula C5H4N4O
Molecular Weight 136.1117
Charge 0
Count
Stereochemistry ACHIRAL
Additional Stereochemistry No
Defined Stereocenters 0 / 0
E/Z Centers 0
Optical Activity NONE