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148797-68-6

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148797-68-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 148797-68-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,4,8,7,9 and 7 respectively; the second part has 2 digits, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 148797-68:
(8*1)+(7*4)+(6*8)+(5*7)+(4*9)+(3*7)+(2*6)+(1*8)=196
196 % 10 = 6
So 148797-68-6 is a valid CAS Registry Number.

148797-68-6Downstream Products

148797-68-6Relevant articles and documents

Synthesis and application of N,N-bis-(1-adamantyloxycarbonyl) amino acids.

Nyasse,Ragnarsson

, p. 374 - 379 (2007/10/02)

The preparation of novel bis-(1-adamantyloxycarbonyl) amino acid derivatives has been undertaken and their properties studied. Among them, the p-nitrophenyl esters were subsequently applied to the stepwise synthesis of Leu-enkephalin. In the last coupling step, some hydantoin formation was encountered but it could be nearly completely overcome by working with more concentrated solution. The preparation of a tyrosine derivative presented special problems owing to the existence of the phenolic group in the precursor. The relative stability of 1-adamantyloxycarbonyl as N- and O-protecting groups was also studied.

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