2H-chromeno[3,4-d]triazol-4-one

Modify Date: 2025-08-26 09:18:30

2H-chromeno[3,4-d]triazol-4-one Structure
2H-chromeno[3,4-d]triazol-4-one structure
 Common Name 2H-chromeno[3,4-d]triazol-4-one
CAS Number 40235-42-5 Molecular Weight 187.15500
Density N/A Boiling Point N/A
Molecular Formula C9H5N3O2 Melting Point N/A
MSDS N/A Flash Point N/A

 Names

Name 2H-chromeno[3,4-d]triazol-4-one
Synonym More Synonyms

 Chemical & Physical Properties

Molecular Formula C9H5N3O2
Molecular Weight 187.15500
Exact Mass 187.03800
PSA 71.78000
LogP 1.06430

 Synthetic Route

3-Nitrocoumarin structure

3-Nitrocoumarin

CAS#:28448-04-6

~87%

2H-chromeno[3,4-d]triazol-4-one Structure

2H-chromeno[3,4...

CAS#:40235-42-5

Literature: Wang, Ting; Hu, Xiao-Chun; Huang, Xu-Jiao; Li, Xin-Sheng; Xie, Jian-Wu Journal of the Brazilian Chemical Society, 2012 , vol. 23, # 6 p. 1119 - 1123
4-Azidocoumarin structure

4-Azidocoumarin

CAS#:42373-56-8

~41%

2H-chromeno[3,4-d]triazol-4-one Structure

2H-chromeno[3,4...

CAS#:40235-42-5

Literature: Ito, Keiichi; Hariya, Junko Heterocycles, 1987 , vol. 26, # 1 p. 35 - 38
N/A structure

N/A

CAS#:40235-51-6

~%

2H-chromeno[3,4-d]triazol-4-one Structure

2H-chromeno[3,4...

CAS#:40235-42-5

Literature: Beck,G.; Guenther,D. Chemische Berichte, 1973 , vol. 106, p. 2758 - 2766
3-(toluene-4-sulfinyl)-chromen-2-one structure

3-(toluene-4-su...

CAS#:54930-94-8

~%

2H-chromeno[3,4-d]triazol-4-one Structure

2H-chromeno[3,4...

CAS#:40235-42-5

Literature: Dean,F.M.; Park,B.K. Journal of the Chemical Society, Perkin Transactions 1: Organic and Bio-Organic Chemistry (1972-1999), 1976 , p. 1260 - 1268

 Synonyms

benzopyrano<3,4-d>-1,2,3-triazol-4-one
chromeno[3,4-d][1,2,3]triazol-4(3H)-one
3-H-triazolo-<4,5-c>-<1>-benzopyran-4-on
<1>Benzopyrano<3,4-d>triazol-4(3H)-on
1H-chromeno[3,4-d][1,2,3]triazol-4-one
1H-5-Oxa-1,2,3-triaza-cyclopenta[a]naphthalen-4-one
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