56307-99-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 56307-99-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 5,6,3,0 and 7 respectively; the second part has 2 digits, 9 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 56307-99:
(7*5)+(6*6)+(5*3)+(4*0)+(3*7)+(2*9)+(1*9)=134
134 % 10 = 4
So 56307-99-4 is a valid CAS Registry Number.
56307-99-4Relevant academic research and scientific papers
SYNTHESIS OF 3-PHENYLTHIOCHROMONES FROM 2'-HYDROXY-2-PHENYLTHIOACETOPHENONES
Szabo, V.,Kiss, A.
, p. 193 - 200 (2007/10/02)
2'-Hydroxy-2-phenylthioacetophenone derivatives (4a, b) can be readily prepared either from 2'-hydroxy-2-halogenoacetophenones (1a-c) and thiophenol, or from phenylthioacetonitrile and polyphenols (route 4b, c).The partial methylation reaction of 4b is co
