53013-01-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 53013-01-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,3,0,1 and 3 respectively; the second part has 2 digits, 0 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 53013-01:
(7*5)+(6*3)+(5*0)+(4*1)+(3*3)+(2*0)+(1*1)=67
67 % 10 = 7
So 53013-01-7 is a valid CAS Registry Number.
53013-01-7Relevant articles and documents
NEW PROCESS FOR THE PREPARATION OF TAPENTADOL AND INTERMEDIATES THEREOF
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Page/Page column 18-19, (2011/06/25)
The present invention refers to a new process for the synthesis of tapentadol comprising the quantitative resolution of the racemic mixture (V) to obtain the stereoisomer of (S)-3-(dimethylamino)-2-methyl-l-(3-nitrophenyl)-propan-l-one (VII) according to