197327
S-Acetylmercaptosuccinic anhydride
96%
Synonym(s):
2-(Acetylthio)succinic anhydride, SAMSA
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About This Item
Empirical Formula (Hill Notation):
C6H6O4S
CAS Number:
Molecular Weight:
174.17
NACRES:
NA.23
PubChem Substance ID:
UNSPSC Code:
12162002
EC Number:
230-135-2
MDL number:
Quality Segment
assay
96%
mp
83-86 °C (lit.)
storage temp.
2-8°C
SMILES string
CC(=O)SC1CC(=O)OC1=O
InChI
1S/C6H6O4S/c1-3(7)11-4-2-5(8)10-6(4)9/h4H,2H2,1H3
InChI key
AHTFMWCHTGEJHA-UHFFFAOYSA-N
General description
S-Acetylmercaptosuccinic anhydride is an amine reactive reagent, containing a sulfhydryl group. The anhydride region opens up, when attacked by an amine nucleophile, forming amine linkage. However, during this ring opening reaction, a free carboxylate group is formed rendering the molecule negatively charged. Activity to proteins and conformation of the molecule us affected by the charge reversal.
Signal Word
Warning
Hazard Codes
Precautionary Statements
Hazard Classifications
Eye Irrit. 2 - Skin Irrit. 2 - STOT SE 3
Target Organs
Respiratory system
Storage Class
11 - Combustible Solids
WGK
WGK 3
Flash Point (°F)
Not applicable
Flash Point (°C)
Not applicable
PPE (personal protective equipment)
dust mask type N95 (US), Eyeshields, Gloves
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