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660838-99-3

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660838-99-3 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 660838-99-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,6,0,8,3 and 8 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 660838-99:
(8*6)+(7*6)+(6*0)+(5*8)+(4*3)+(3*8)+(2*9)+(1*9)=193
193 % 10 = 3
So 660838-99-3 is a valid CAS Registry Number.

660838-99-3Relevant articles and documents

Synthesis of chiral azomethines from methyl l-3-phenylalaninate hydrochloride and substituted benzaldehydes of vanillin series

Dikusar

experimental part, p. 202 - 206 (2011/05/04)

A preparative procedure is developed for the synthesis of chiral azomethines from methyl L-3-phenylalaninate and substituted aldehydes of vanillin series.

Process for producing alpha-aminoketones

-

, (2008/06/13)

An amino group of an α-amino acid ester is protected as an imine, and it is then reacted with a halomethyllithium to obtain an N-protected-α-aminohalomethylketone. Further, this N-protected-α-aminohalomethylketone is treated with an acid to obtain an α-aminohalomethylketone. This process is suited for industrial production, and can produce an α-aminohalomethylketone and its related compounds economically and efficiently.

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