Back
HuagongsheHuagongshe Chemistry Print Report · For research reference only
HCID 88012Generated: October 23, 2026

1H-Indazol-5-amine

1H-INDAZOL-5-AMINE · 5-indazolamine · 5-Aminoindazole · indazol-5-ylamine · 5-amino-1h-indazol · 5-Aminoindazole,97% · 5-Aminoindazole,99% · 5-Aminoindazole 98%

https://huagongshe.com/en/chemical/88012

1H-Indazol-5-amine molecular structure

Identifiers & Physical Properties

CAS No.19335-11-6
Molecular formulaC7H7N3
Average molar mass133.15 g/mol
Monoisotopic mass133.06399722 g/mol
SMILESNc1ccc2[nH]ncc2c1
InChIKeyXBTOSRUBOXQWBO-UHFFFAOYSA-N
PubChem CID88012
ChEMBLCHEMBL17551
EC No.242-971-5
DTXSIDDTXSID2066480

Chemical & Physical Properties

XLogP1.5
Topological polar surface area54.7
Hydrogen bond donors2
Hydrogen bond acceptors2
Rotatable bonds0
Heavy atoms10
Formal charge0
Complexity126
LogP (partition coefficient)0.65
Solubility17.9 [ug/mL] (The mean of the results at pH 7.4)soluble in Methanol
Melting point175-178 °C (lit.)
Boiling point235.67°C (rough estimate)
Density1.1873 (rough estimate)
Refractive index1.5341 (estimate)
Storage conditionsKeep in dark place,Inert atmosphere,Room temperature
Physical statepowder to crystal
pKa (acidity coefficient)14.52±0.40(Predicted)
ColorWhite to Brown
BRN3259
InChIInChI=1S/C7H7N3/c8-6-1-2-7-5(3-6)4-9-10-7/h1-4H,8H2,(H,9,10)
InChIKeyXBTOSRUBOXQWBO-UHFFFAOYSA-N
SMILESN1C2=C(C=C(N)C=C2)C=N1
CAS DataBase Reference19335-11-6(CAS DataBase Reference)
EWG's Food Scores1
FDA UNIIA5B06TDT72
EPA Substance Registry System5-Aminoindazole (19335-11-6)
UNSPSC Code12352100
NACRESNA.22
GHS pictogramGHS06
Signal wordDanger
GHS hazard statementsH301-H315-H319-H335
GHS precautionary statementsP301+P310+P330-P302+P352-P305+P351+P338
Target organsRespiratory system
Personal protective equipment (PPE)Eyeshields, Faceshields, Gloves, type P2 (EN 143) respirator cartridges
Hazard symbolsT,Xn
Risk statements (R)25-36/37/38
Safety statements (S)26-36-45-37/39
UN transport numberUN 2811 6.1/PG 3
Water hazard class (WGK)3
RTECS numberNK7711000
TSCA inventory statusTSCA listed
Hazard class6.1Acute Tox. 3 OralEye Irrit. 2Skin Irrit. 2STOT SE 3
Packing groupIII
Customs code29339900
Storage class6.1C - Combustible acute toxic Cat.3toxic compounds or compounds which causing chronic effects
Limited quantities5.0 kg (11 lbs) (solid)
Excepted quantitiesMax Inner Pack (30g or 30ml) and Max Outer Pack (1Kg or 1L)

Safety & Regulations

GHS classificationDangerH301 (100%): Toxic if swallowed [Danger Acute toxicity, oral]P261, P264, P264+P265, P270, P271, P280, P301+P316, P302+P352, P304+P340, P305+P351+P338, P319, P321, P330, P332+P317, P337+P317, P362+P364, P403+P233, P405, and P501 (click each P-code to see the statement)Aggregated GHS information provided per 49 reports by companies from 7 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.
Regulatory information1H-Indazol-5-amine: Does not have an individual approval but may be used under an appropriate group standard
Hazard Classes and CategoriesAcute Tox. 3 (100%)
Personal protective equipment (PPE)Eyeshields, Faceshields, Gloves, type P2 (EN 143) respirator cartridges
Water hazard class (WGK)3
TSCA inventory statusTSCA listed
RTECS numberNK7711000
UN transport numberUN 2811 6.1/PG 3
Customs code29339900
Risk statements (R)25-36/37/38
Signal wordDanger
GHS pictogramGHS06
Hazard symbolsT,Xn
Safety statements (S)26-36-45-37/39
Hazard class6.1Acute Tox. 3 OralEye Irrit. 2Skin Irrit. 2STOT SE 3
Storage class6.1C - Combustible acute toxic Cat.3toxic compounds or compounds which causing chronic effects
Packing groupIII
Target organsRespiratory system
GHS hazard statementsH301-H315-H319-H335
Limited quantities5.0 kg (11 lbs) (solid)
Excepted quantitiesMax Inner Pack (30g or 30ml) and Max Outer Pack (1Kg or 1L)
GHS precautionary statementsP301+P310+P330-P302+P352-P305+P351+P338

Applications & Uses

Uses

5-Amino-1H-indazole is a biochemical reagent that can be used as a biological material or organic compound for life science related research.