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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HCID 14484Generated: October 23, 2026

Acetylcysteamine

N-ACETYLCYSTEAMINE · Acetylcysteamine · n-acetylcysteamin · N-Acetyl cysteamin · cysteamine,n-acetyl · Cysteamine, N-acetyl- · 2-Acetamidoethanethiol · 2-(acetylamino)-ethanethio

https://huagongshe.com/en/chemical/14484

Acetylcysteamine molecular structure

Identifiers & Physical Properties

CAS No.1190-73-4
Molecular formulaC4H9NOS
Average molar mass119.19 g/mol
Monoisotopic mass119.04048491 g/mol
SMILESCC(=O)NCCS
InChIKeyAXFZADXWLMXITO-UHFFFAOYSA-N
PubChem CID14484
ChEBICHEBI:74410
EC No.683-054-3
DTXSIDDTXSID90152289

Chemical & Physical Properties

XLogP-0.2
Topological polar surface area30.1
Hydrogen bond donors2
Hydrogen bond acceptors2
Rotatable bonds2
Heavy atoms7
Formal charge0
Complexity64.7
Melting point6-7 °C (lit.)
Boiling point138-140 °C/7 mmHg (lit.)
Density1.121 g/mL at 25 °C (lit.)
Refractive indexn20/D 1.511(lit.)
Flash point>230 °F
Storage conditionsInert atmosphere,Room Temperature
SolubilityEtherDichloromethaneEthyl AcetateMethanol
Physical stateliquid
pKa (acidity coefficient)9.92±0.10(Predicted)
ColorClear
InChI1S/C4H9NOS/c1-4(6)5-2-3-7/h7H,2-3H2,1H3,(H,5,6)
InChIKeyAXFZADXWLMXITO-UHFFFAOYSA-N
SMILESCC(=O)NCCS
EWG's Food Scores1
FDA UNIINSH3F3JX85
UNSPSC Code12352100
NACRESNA.22
GHS pictogramGHS07
Signal wordWarning
GHS hazard statementsH315-H319-H335
GHS precautionary statementsP261-P264-P271-P280-P302+P352-P305+P351+P338
Target organsRespiratory system
Personal protective equipment (PPE)Eyeshields, Gloves, type ABEK (EN14387) respirator filter
Hazard symbolsXi
Risk statements (R)36/37/38
Safety statements (S)26-37/39
Water hazard class (WGK)3
RTECS numberAC4620000
Storage class10 - Combustible liquids
Hazard classEye Irrit. 2Skin Irrit. 2STOT SE 3

Safety & Regulations

GHS classificationWarningH315 (100%): Causes skin irritation [Warning Skin corrosion/irritation]P261, P264, P264+P265, P271, P280, P302+P352, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, P403+P233, P405, and P501 (click each P-code to see the statement)Aggregated GHS information provided per 39 reports by companies from 2 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies.
Hazard Classes and CategoriesSkin Irrit. 2 (100%)
Personal protective equipment (PPE)Eyeshields, Gloves, type ABEK (EN14387) respirator filter
Water hazard class (WGK)3
RTECS numberAC4620000
Risk statements (R)36/37/38
Signal wordWarning
GHS pictogramGHS07
Hazard symbolsXi
Safety statements (S)26-37/39
Storage class10 - Combustible liquids
Target organsRespiratory system
GHS hazard statementsH315-H319-H335
Hazard classEye Irrit. 2Skin Irrit. 2STOT SE 3
GHS precautionary statementsP261-P264-P271-P280-P302+P352-P305+P351+P338

Applications & Uses

Uses

N-Acetylcysteamine is an intermediate used in the synthesis of (E,E)-Piperic Acid S-[2-(Acetylamino)ethyl] Ester (P481490), which is an analog of (E,E)-Piperic Acid (P481530).