329923-17-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 329923-17-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,2,9,9,2 and 3 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 329923-17:
(8*3)+(7*2)+(6*9)+(5*9)+(4*2)+(3*3)+(2*1)+(1*7)=163
163 % 10 = 3
So 329923-17-3 is a valid CAS Registry Number.
329923-17-3Relevant articles and documents
AN IMPROVED PROCESS FOR THE PREPARATION OF BOSENTAN
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, (2011/04/14)
The present application provides purification of Bosentan crude by making its crystalline potassium salt, which is further converted to Bosentan (I) with bis-sulfonamide (VIII) and deshydroxyethyl (IX) impurities to less than 0.2% by HPLC analysis.