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74401-81-3

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74401-81-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 74401-81-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,4,4,0 and 1 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 74401-81:
(7*7)+(6*4)+(5*4)+(4*0)+(3*1)+(2*8)+(1*1)=113
113 % 10 = 3
So 74401-81-3 is a valid CAS Registry Number.

74401-81-3Downstream Products

74401-81-3Relevant articles and documents

Unlocking the potential of phenacyl protecting groups: CO2-based formation and photocatalytic release of caged amines

Speckmeier, Elisabeth,Klimkait, Michael,Zeitler, Kirsten

, p. 3738 - 3745 (2018)

Orthogonal protection and deprotection of amines remain important tools in synthetic design as well as in chemical biology and material research applications. A robust, highly efficient, and sustainable method for the formation of phenacyl-based carbamate esters was developed using CO2 for the in situ preparation of the intermediate carbamates. Our mild and broadly applicable protocol allows for the formation of phenacyl urethanes of anilines, primary amines, including amino acids, and secondary amines in high to excellent yields. Moreover, we demonstrate the utility by a mild and convenient photocatalytic deprotection protocol using visible light. A key feature of the [Ru(bpy)3](PF6)2-catalyzed method is the use of ascorbic acid as reductive quencher in a neutral, buffered, two-phase acetonitrile/water mixture, granting fast and highly selective deprotection for all presented examples.

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