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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HCID 736607Generated: October 26, 2026

2-Aminothiophene-3-carbonitrile

2-AMINOTHIOPHENE-3-CARBONITRILE · AKOS 92285 · AKOS B014697 · Compound Fr16663 · AKOS BBS-00006621 · BUTTPARK 36\18-34 · ART-CHEM-BB B014697 · TIMTEC-BB SBB005484

https://huagongshe.com/en/chemical/736607

2-Aminothiophene-3-carbonitrile molecular structure

Identifiers & Physical Properties

CAS No.4651-82-5
Molecular formulaC5H4N2S
Average molar mass124.17 g/mol
Monoisotopic mass124.00951913 g/mol
SMILESN#Cc1ccsc1N
InChIKeyXVGHZFWFGXDIOU-UHFFFAOYSA-N
PubChem CID736607
ChEMBLCHEMBL5218826
EC No.610-308-2
DTXSIDDTXSID90353072

Chemical & Physical Properties

XLogP1.5
Topological polar surface area78.1
Hydrogen bond donors1
Hydrogen bond acceptors3
Rotatable bonds0
Heavy atoms8
Formal charge0
Complexity126
Melting point104-108 °C
Boiling point318℃
Density1.33
Flash point146℃
Storage conditionsunder inert gas (nitrogen or Argon) at 2–8 °C
Physical statepowder to crystalline
pKa (acidity coefficient)-0.28±0.10(Predicted)
ColorWhite to Light yellow to Light orange
InChIInChI=1S/C5H4N2S/c6-3-4-1-2-8-5(4)7/h1-2H,7H2
InChIKeyXVGHZFWFGXDIOU-UHFFFAOYSA-N
SMILESC1(N)SC=CC=1C#N
CAS DataBase Reference4651-82-5(CAS DataBase Reference)
UNSPSC Code12352100
NACRESNA.22
GHS pictogramGHS05,GHS07
Signal wordDanger
GHS hazard statementsH302-H315-H318-H335
GHS precautionary statementsP280-P301+P312+P330-P302+P352-P305+P351+P338+P310
Target organsRespiratory system
Personal protective equipment (PPE)dust mask type N95 (US), Eyeshields, Faceshields, Gloves
Hazard symbolsXi,Xn
Risk statements (R)20/21/22-36/37/38-41-37/38-22
Safety statements (S)36/37-39-26
UN transport number3439
Water hazard class (WGK)3
Hazard classIRRITANTAcute Tox. 4 OralEye Dam. 1Skin Irrit. 2STOT SE 3
Customs code2934999090
Storage class11 - Combustible Solids

Safety & Regulations

GHS classificationDangerH302 (95.6%): Harmful if swallowed [Warning Acute toxicity, oral]P261, P264, P264+P265, P270, P271, P280, P301+P317, P302+P352, P304+P340, P305+P351+P338, P305+P354+P338, P317, 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 45 reports by companies from 7 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.
Hazard Classes and CategoriesAcute Tox. 4 (95.6%)
Personal protective equipment (PPE)dust mask type N95 (US), Eyeshields, Faceshields, Gloves
Water hazard class (WGK)3
UN transport number3439
Customs code2934999090
Risk statements (R)20/21/22-36/37/38-41-37/38-22
Signal wordDanger
GHS pictogramGHS05,GHS07
Hazard symbolsXi,Xn
Safety statements (S)36/37-39-26
Hazard classIRRITANTAcute Tox. 4 OralEye Dam. 1Skin Irrit. 2STOT SE 3
Storage class11 - Combustible Solids
Target organsRespiratory system
GHS hazard statementsH302-H315-H318-H335
GHS precautionary statementsP280-P301+P312+P330-P302+P352-P305+P351+P338+P310

Applications & Uses

Uses

2-Aminothiophene-3-carboxynitrile is a pharmaceutical intermediate. Due to its important role in immunity, HPK1 inhibitors play an important role in malignant solid tumors or hematological malignancies (such as acute myeloid leukemia, bladder epithelial carcinoma, breast cancer, colon cancer, lung cancer, pancreatic cancer, melanoma), autoimmune diseases (such as systemic lupus erythematosus, psoriatic arthritis), and inflammatory responses.