![Structure of Sulfonium, triphenyl-, 1-tricyclo[3.3.1.13,7]dec-1-yl ethanedioate <span class="caps">CAS</span> 1638753-76-0 Structure of Sulfonium, triphenyl-, 1-tricyclo[3.3.1.13,7]dec-1-yl ethanedioate CAS 1638753-76-0](https://www.watson-int.com/wp-content/uploads/2026/06/Structure-of-Sulfonium-triphenyl-1-tricyclo3.3.1.137dec-1-yl-ethanedioate-CAS-1638753-76-0.jpg)
Identification
CAS Number
1638753-76-0
Name
Sulfonium, triphenyl-, 1-tricyclo[3.3.1.13,7]dec-1-yl ethanedioate (1:1)
Synonyms
Triphenylsulfonium 2-(1-Adamantyloxy)-2-oxoacetate
SMILES
O=C([O-])C(=O)OC12CC3CC(CC(C3)C1)C2.c1ccc(S+c2ccccc2)cc1
StdInChI
InChI=1S/C18H15S.C12H16O4/c1-4-10-16(11-5-1)19(17-12-6-2-7-13-17)18-14-8-3-9-15-18;13-10(14)11(15)16-12-4-7-1-8(5-12)3-9(2-7)6-12/h1-15H;7-9H,1-6H2,(H,13,14)/q+1;/p-1
StdInChIKey
ZZXPBBGDNLNWFR-UHFFFAOYSA-M
Molecular Formula
C30H30O4S
Molecular Weight
486.626
Properties
Appearance
White to off-white powder
Safety Data
RIDADR
NONH for all modes of transport
WGK Germany
3
Specifications and Other Information of Our Sulfonium, triphenyl-, 1-tricyclo[3.3.1.13,7]dec-1-yl ethanedioate (1:1) CAS 1638753-76-0
Identification Methods
HNMR, HPLC
Purity
99%min, 99.5% min
Total metal impurities
<100ppb, <50ppb
Shelf Life
2 years
Storage
Under room temperature away from light
Known Application
This product is primarily used as a photoacid generator (PAG) in chemically amplified photoresist systems for advanced semiconductor lithography. Upon exposure to UV or deep ultraviolet (DUV) light, it generates strong acids that initiate catalytic deprotection reactions in photoresist materials, enabling high-resolution pattern formation.
Typical applications include :
Semiconductor photoresist formulations
Integrated circuit (IC) manufacturing
Advanced lithography processes (DUV / ArF)
Microelectronic and nanofabrication technologies
Chemically amplified resist (CAR) systems
Advanced packaging applications
Electronic and optoelectronic materials
This type of sulfonium salt PAG is widely used due to its high acid generation efficiency, good thermal stability, and suitability for advanced-node lithography processes requiring high resolution and low line-edge roughness.
Links
This product is developed by our R&D company WatsonChem Advanced Chemical Materials (https://www.watsonchem.com/).
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