321589-01-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 321589-01-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,2,1,5,8 and 9 respectively; the second part has 2 digits, 0 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 321589-01:
(8*3)+(7*2)+(6*1)+(5*5)+(4*8)+(3*9)+(2*0)+(1*1)=129
129 % 10 = 9
So 321589-01-9 is a valid CAS Registry Number.
321589-01-9Relevant articles and documents
IMPROVED PROCESS FOR THE PREPARATION OF 2R, 3S-2-(2,4-DIFLUOROPHENYL)-3-(5-FLUOROPYRIMIDIN-4-YL)-1-(1H-1,2,4-TRIAZOL-1-YL) BUTAN-2-OL (VORICONAZOLE)
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Page/Page column 10, (2008/06/13)
The present invention relates to an improved process for the preparation of 2R, 3S-2-(2,4-difluorophenyl)-3-(5-fluoropyrimidin-4-yl)-1-(1H-1,2,4-triazol-1-yl) butan-2-ol. It may be represented as Formula (I).