Indigo (cis)
Basics
Category
Indolics & indole alkaloid derivatives
IUPAC-name
(Z)-[2,2'-biindolinylidene]-3,3'-dione
Formula
No formula stored
Exact mass
262.07420 g/mol
Molecular weight
No weights stored
Structure
Sources
In summary, the chemical indigo (cis) has been analyzed from following sources:
Note that an analysis result in the database may indicate either presence or lack thereof of a chemical in an analyzed sample.
References
- T. Maugard, E. Enaud, P. Choisy, and M. Legoy, "Identification of an indigo precursor from leaves of Isatis tinctoria (woad).," Phytochemistry , vol. 58 , no. 6 , pp. 897–904 , DOI: 10.1016/S0031-9422(01)00335-1 .
Analysis results
Analysis result 1
| Detection technique | Values | Units |
|---|---|---|
| UV/Vis | 603 | nm |
| [M⁺ H]⁺ | 263 | m/z |
| MS²⁺ |
219
235 |
m/z |
STD
False
TLC
False
UV/Vis detector description
HPLC-DAD, UV
Mass spectrometer description
HPLC-MS
Organism
Isatis tinctoria
'IT BM'
L.
cultivated
fresh
Collection dates
2000-6
Sample note
The cultivar IT BM was grown in a field of CRITT (St Savin, France) and was collected by the researchers.
Extraction solvents
acetone:acetic acid 1% (v/v)
Extraction mass/volume-ratio
100 mg/mL
Extraction time
4 h
Extraction temperature
24 °C
Extract drying method
evaporation under reduced pressure
Analysis solvents
acetic acid (was left in the extract); MeOH
Detection note
In old leaves; blue; indigotin (trans-indigo) is an isomer of cis-indigo; 263 --> 235 [–CO] and 219 [–CO–NH2]
References
T. Maugard, E. Enaud, P. Choisy, and M. Legoy, "Identification of an indigo precursor from leaves of Isatis tinctoria (woad).," Phytochemistry , vol. 58 , no. 6 , pp. 897–904 , DOI: 10.1016/S0031-9422(01)00335-1 .