1161573-31-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1161573-31-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,1,6,1,5,7 and 3 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1161573-31:
(9*1)+(8*1)+(7*6)+(6*1)+(5*5)+(4*7)+(3*3)+(2*3)+(1*1)=134
134 % 10 = 4
So 1161573-31-4 is a valid CAS Registry Number.
1161573-31-4Relevant articles and documents
METHOD FOR PREPARING (R)-(-)-1-[(4-CHLOROPHENYL)PHENYLMETHYL]PIPERAZINE
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Page/Page column 7, (2009/07/18)
The present invention relates to a novel method for preparing (R)-(-)-1-[(4-chlorophenyl)phenylmethyl]piperazine of formula (I), which is useful as an intermediate for preparing an antihistamine, levocetirizine.