21424-91-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 21424-91-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 2,1,4,2 and 4 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 21424-91:
(7*2)+(6*1)+(5*4)+(4*2)+(3*4)+(2*9)+(1*1)=79
79 % 10 = 9
So 21424-91-9 is a valid CAS Registry Number.
InChI:InChI=1/C13H15ClN2O2/c1-18-10-2-3-12-11(6-10)9(8-16-12)4-5-15-13(17)7-14/h2-3,6,8,16H,4-5,7H2,1H3,(H,15,17)
21424-91-9Relevant articles and documents
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Kobayashi et al.
, p. 636 (1969)
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Syntheses of melatonin and its derivatives
Somei, Masanori,Fukui, Yoshikazu,Hasegawa, Masakazu,Oshikiri, Naoki,Hayashi, Toshikatsu
, p. 1725 - 1736 (2007/10/03)
Two simple synthetic methods for melatonin are newly developed from tryptamine through intermediates, which are promising lead compounds for drug developing research. Novel chemical reactivities of melatonin in its bromination, lithiation, and acylation are also reported.