161872-99-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 161872-99-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,6,1,8,7 and 2 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 161872-99:
(8*1)+(7*6)+(6*1)+(5*8)+(4*7)+(3*2)+(2*9)+(1*9)=157
157 % 10 = 7
So 161872-99-7 is a valid CAS Registry Number.
161872-99-7Relevant academic research and scientific papers
Carbon Analogues of Brasilin and Hematoxylin
Fies, Martin,Friedrich, Klaus
, p. 50 - 54 (2007/10/02)
Starting from tetrahydronaphthalin-1-one derivatives 3a and 3b, the carbon analogues 10a and 10b of Hematoxylin and Brasilin are synthesized.The 1H-NMR- and 13C-NMR-spectra of the compounds are given.The stereochemistry of the tetracycles 10a and 10b is s
