844639-08-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 844639-08-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,4,4,6,3 and 9 respectively; the second part has 2 digits, 0 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 844639-08:
(8*8)+(7*4)+(6*4)+(5*6)+(4*3)+(3*9)+(2*0)+(1*8)=193
193 % 10 = 3
So 844639-08-3 is a valid CAS Registry Number.
844639-08-3Relevant articles and documents
PREPARATION OF QUETIAPINE
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Page/Page column 6, (2010/02/11)
The present invention discloses a process for the preparation of quetiapine, which comprises the reaction of dibenzo[b,f][1,4]thiazepin-11-ylamine with a compound of the general formula (II) as well as novel intermediates in the process.
