642442-03-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 642442-03-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 6,4,2,4,4 and 2 respectively; the second part has 2 digits, 0 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 642442-03:
(8*6)+(7*4)+(6*2)+(5*4)+(4*4)+(3*2)+(2*0)+(1*3)=133
133 % 10 = 3
So 642442-03-3 is a valid CAS Registry Number.
642442-03-3Relevant articles and documents
Stereoselective synthesis of (R)-(-)-mianserin
Pawlowska,Czarnocki,Wojtasiewicz,Maurin
, p. 3335 - 3342 (2007/10/03)
(14bR)-2-Methyl-1,2,3,4,10,14b-hexahydrodibenzo[c,f]pyrazino[1,2-a]azepine, (R)-(-)-mianserin 1a was synthesised in several steps in good enantiomeric purity with the use of (S)-(-)-α-methylbenzylamine 5. The absolute configuration was assigned on the bas
