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Trifluoro-methanesulfonic acid 3,3-bis-benzyloxy-propyl ester is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

157491-69-5

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157491-69-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 157491-69-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,7,4,9 and 1 respectively; the second part has 2 digits, 6 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 157491-69:
(8*1)+(7*5)+(6*7)+(5*4)+(4*9)+(3*1)+(2*6)+(1*9)=165
165 % 10 = 5
So 157491-69-5 is a valid CAS Registry Number.

157491-69-5Downstream Products

157491-69-5Relevant academic research and scientific papers

Synthesis of β-lactones by the photochemical reactions of chromium alkoxycarbene complexes with aldehydes

Colson,Hegedus

, p. 4972 - 4976 (2007/10/02)

Photolysis of chromium alkoxycarbene complexes with aldehydes in the presence of Lewis acids produced β-lactones in low yield. Incorporation of the aldehyde into either side chain of the carbene complex resulted in intramolecular processes which were considerably more efficient.

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