170457-20-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 170457-20-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,0,4,5 and 7 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 170457-20:
(8*1)+(7*7)+(6*0)+(5*4)+(4*5)+(3*7)+(2*2)+(1*0)=122
122 % 10 = 2
So 170457-20-2 is a valid CAS Registry Number.
170457-20-2Relevant academic research and scientific papers
Synthesis of 6-allylcoumarins unoxygenated at C-7 position
Mali, R. S.,Massey, Archna Patience
, p. 686 - 688 (2007/10/03)
A convenient method for the synthesis of 6-allylcoumarins (6a-c) is described from 2-allyloxy-3-methoxybenzaldehyde (2).Compound 2 on reaction with phosphoranes (3a-c) provide (E)-ethylcinnamates (4a-c) which on Claisen rearrangement (4a-c 5a-c) follo
