1804-91-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1804-91-7 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,8,0 and 4 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1804-91:
(6*1)+(5*8)+(4*0)+(3*4)+(2*9)+(1*1)=77
77 % 10 = 7
So 1804-91-7 is a valid CAS Registry Number.
1804-91-7Relevant academic research and scientific papers
Two Syntheses of 7,2'-Dimethoxyisoflavone
Rani, Indu
, p. 361 - 362 (2007/10/02)
7,2'-Dimethoxyisoflavone (V) has been synthesised by two routes: (i) by direct oxidative rearrangement of 2'-hydroxy-2,4'-dimethoxychalkone; and (ii) by treatment of 2'-benzyloxy-2,4'-dimethoxychalkone epoxide (III) derivable from I, with BF3-etherate to
