Cas 1257985-09-3,(S)-benzyl-3-methyl-1-oxo-1-(2-(5-((triisopropylsilyl)ethynyl)thiophen-2-yl)ethylamino)butan-2-ylcarbamate

1257985-09-3

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Basic information

Product Name: (S)-benzyl-3-methyl-1-oxo-1-(2-(5-((triisopropylsilyl)ethynyl)thiophen-2-yl)ethylamino)butan-2-ylcarbamate
Synonyms: (S)-benzyl-3-methyl-1-oxo-1-(2-(5-((triisopropylsilyl)ethynyl)thiophen-2-yl)ethylamino)butan-2-ylcarbamate
CAS NO:1257985-09-3
Molecular Formula:
Molecular Weight: 540.842
EINECS: N/A
Product Categories: N/A

Chemical Properties

Melting Point: N/A
Boiling Point: N/A
Flash Point: N/A
Appearance: N/A
Density: N/A
Refractive Index: N/A
Storage Temp.: N/A
Solubility: N/A
CAS DataBase Reference: (S)-benzyl-3-methyl-1-oxo-1-(2-(5-((triisopropylsilyl)ethynyl)thiophen-2-yl)ethylamino)butan-2-ylcarbamate(CAS DataBase Reference)
NIST Chemistry Reference: (S)-benzyl-3-methyl-1-oxo-1-(2-(5-((triisopropylsilyl)ethynyl)thiophen-2-yl)ethylamino)butan-2-ylcarbamate(1257985-09-3)
EPA Substance Registry System: (S)-benzyl-3-methyl-1-oxo-1-(2-(5-((triisopropylsilyl)ethynyl)thiophen-2-yl)ethylamino)butan-2-ylcarbamate(1257985-09-3)

Safety Data

Hazard Codes: N/A
Statements: N/A
Safety Statements: N/A
WGK Germany:
RTECS:
HazardClass: N/A
PackingGroup: N/A
Hazardous Substances Data: 1257985-09-3(Hazardous Substances Data)

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Check Digit Verification of cas no

The CAS Registry Mumber 1257985-09-3 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,5,7,9,8 and 5 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1257985-09:
(9*1)+(8*2)+(7*5)+(6*7)+(5*9)+(4*8)+(3*5)+(2*0)+(1*9)=203
203 % 10 = 3
So 1257985-09-3 is a valid CAS Registry Number.

1257985-09-3Upstream product

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1257985-09-3Relevant academic research and scientific papers

Direct alkynylation of thiophenes: Cooperative activation of TIPS-EBX with gold and Bronsted acids

Brand, Jonathan P.,Waser, Jerome

, p. 7304 - 7307 (2010)

United we stand! Cooperative activation of the hypervalent-iodine reagent TIPS-EBX with a gold catalyst and a Bronsted acid allowed the first direct ethynylation of thiophenes at room temperature (see scheme; TFA = trifluoroacetic acid). The obtained ethynylthiophenes are important building blocks for organic dyes and electronic materials.

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