161873-02-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 161873-02-5 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 3 respectively; the second part has 2 digits, 0 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 161873-02:
(8*1)+(7*6)+(6*1)+(5*8)+(4*7)+(3*3)+(2*0)+(1*2)=135
135 % 10 = 5
So 161873-02-5 is a valid CAS Registry Number.
161873-02-5Relevant articles and documents
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
