19519-04-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 19519-04-1 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,5,1 and 9 respectively; the second part has 2 digits, 0 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 19519-04:
(7*1)+(6*9)+(5*5)+(4*1)+(3*9)+(2*0)+(1*4)=121
121 % 10 = 1
So 19519-04-1 is a valid CAS Registry Number.
19519-04-1Relevant articles and documents
Preparation of N-protected N-alkylated amino acids
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, (2008/06/13)
A process for preparing N-protected N-alkylated amino acids of the formula STR1 where Rs and R1 -R3 have the meanings indicated in the description comprises adding a compound of the abovementioned formula where R3 is hydrogen to a solution of a base in a non-protic solvent and subsequently adding an alkylating agent.
