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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HCID 2773435Generated: October 23, 2026

1H-Indole-6-carboxaldehyde

1H-INDOLE-6-CARBALDEHYDE · 1H-INDOLE-5-CARBALDEHYDE · 6-FORMYLINDOLE · 6-indolealdehyde · INDOLE-5-ALDEHYDE · INDOLE-6-ALDEHYDE · 6-Formyl-1H-indole · INDOLE-6-CARBALDEHYDE

https://huagongshe.com/en/chemical/2773435

1H-Indole-6-carboxaldehyde molecular structure

Identifiers & Physical Properties

CAS No.1196-70-9
Molecular formulaC9H7NO
Average molar mass145.16 g/mol
Monoisotopic mass145.05276384 g/mol
SMILESO=Cc1ccc2cc[nH]c2c1
InChIKeyVSPBWOAEHQDXRD-UHFFFAOYSA-N
PubChem CID2773435
ChEMBLCHEMBL3358225
EC No.626-403-7
DTXSIDDTXSID00378458

Chemical & Physical Properties

XLogP2.1
Topological polar surface area32.9
Hydrogen bond donors1
Hydrogen bond acceptors1
Rotatable bonds1
Heavy atoms11
Formal charge0
Complexity158
Melting point127-131 °C(lit.)
Boiling point339.1±15.0 °C(Predicted)
Density1.278±0.06 g/cm3(Predicted)
Storage conditionsKeep in dark place,Sealed in dry,Room Temperature
SolubilityChloroform, Dichloromethane
pKa (acidity coefficient)15.84±0.30(Predicted)
Physical stateCrystalline Powder
ColorYellow to orange to brown
CAS DataBase Reference1196-70-9(CAS DataBase Reference)
GHS pictogramGHS07
Signal wordWarning
GHS hazard statementsH317-H319
GHS precautionary statementsP280-P305+P351+P338
Hazard symbolsXi
Risk statements (R)36-43
Safety statements (S)26-36/37/39-36/37
Water hazard class (WGK)3
Hazard NoteIrritant/Keep Cold
Hazard classIRRITANT
Customs code29339980

Safety & Regulations

GHS classificationWarningH317 (95.5%): May cause an allergic skin reaction [Warning Sensitization, Skin]P261, P264+P265, P272, P280, P302+P352, P305+P351+P338, P321, P333+P317, P337+P317, P362+P364, and P501 (click each P-code to see the statement)Aggregated GHS information provided per 44 reports by companies from 6 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.
Hazard Classes and CategoriesSkin Sens. 1 (95.5%)
Water hazard class (WGK)3
Customs code29339980
Risk statements (R)36-43
Signal wordWarning
GHS pictogramGHS07
Hazard symbolsXi
hazard_noteIrritant/Keep Cold
Safety statements (S)26-36/37/39-36/37
Hazard classIRRITANT
GHS hazard statementsH317-H319
GHS precautionary statementsP280-P305+P351+P338

Applications & Uses

Uses

Reactant in preparation of analogs of botulinum neurotoxin serotype A protease inhibitors 1 Reactant in synthesis of stilbene-based antitumor agents 2 Reactant in acid-catalyzed preparation of aromatic gem-dihalides from aldehydes and acid halides.

Uses

Indole-6-carboxaldehyde (cas# 1196-70-9) is a compound useful in organic synthesis.