19897-64-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 19897-64-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,9,8,9 and 7 respectively; the second part has 2 digits, 6 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 19897-64:
(7*1)+(6*9)+(5*8)+(4*9)+(3*7)+(2*6)+(1*4)=174
174 % 10 = 4
So 19897-64-4 is a valid CAS Registry Number.
InChI:InChI=1/C15H20Br2O2/c1-3-5-6-7-12-15-8-11(17)14(19-15)9-13(18-12)10(16)4-2/h1,5-6,10-15H,4,7-9H2,2H3/b6-5+
19897-64-4Relevant articles and documents
Asymmetric total syntheses of (+)-3-(Z)-laureatin and (+)-3-(Z)- isolaureatin by "lone pair-lone pair interaction-controlled" isomerization
Kim, Hyoungsu,Lee, Hyunjoo,Lee, Dongjoo,Kim, Sanghee,Kim, Deukjoon
, p. 2269 - 2274 (2007)
The first asymmetric total syntheses of the dihalogenated medium-sized dioxabicyclic marine natural products (+)-3-(Z)-isolaureatin (1) and (+)-3-(Z)-laureatin (2) have been accomplished. Notable features of the highly stereo-, regio-, and chemoselective