123394-23-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 123394-23-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,3,3,9 and 4 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 123394-23:
(8*1)+(7*2)+(6*3)+(5*3)+(4*9)+(3*4)+(2*2)+(1*3)=110
110 % 10 = 0
So 123394-23-0 is a valid CAS Registry Number.
123394-23-0Relevant articles and documents
FORMYLATION AND AMINOALKYLATION OF 2,4-DIARYL-4H-CHROMENES
Koblic, A. V.,Suzdalev, K. F.
, p. 155 - 158 (2007/10/02)
Under the conditions of the Vilsmeier and Mannich reactions 4H-chromenes form the products from substitution at position 3.Under the influence of perchloric acid in acetic anhydride the 3-formylchromenes undergo cyclization to benzoindeno-pyryli
