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95338-37-7

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95338-37-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 95338-37-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,5,3,3 and 8 respectively; the second part has 2 digits, 3 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 95338-37:
(7*9)+(6*5)+(5*3)+(4*3)+(3*8)+(2*3)+(1*7)=157
157 % 10 = 7
So 95338-37-7 is a valid CAS Registry Number.

95338-37-7Relevant articles and documents

Coupling of Quinone Monoacetals with Vinyl Ethers Effected by Tetrabutylammonium Triflate: Regiocontrolled Synthesis of 2-Oxygenated Dihydrobenzofurans

Kamitanaka, Tohru,Tsunoda, Yusuke,Fujita, Yuriko,Dohi, Toshifumi,Kita, Yasuyuki

supporting information, p. 9025 - 9029 (2021/11/24)

The synthesis of 2-oxygenated dihydrobenzofurans involving the [3 + 2] coupling of quinone monoacetals with vinyl ethers has been realized by tetrabutylammonium triflate catalysis. The reaction involves a new activation method of the acetal moiety in quinone monoacetals under acid-free conditions affording the highly oxygenated dihydrobenzofurans. This new activation mode was achieved by using the triflate anion catalyst for stabilization of the highly reactive cationic intermediate.

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