153983-23-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 153983-23-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,3,9,8 and 3 respectively; the second part has 2 digits, 2 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 153983-23:
(8*1)+(7*5)+(6*3)+(5*9)+(4*8)+(3*3)+(2*2)+(1*3)=154
154 % 10 = 4
So 153983-23-4 is a valid CAS Registry Number.
153983-23-4Relevant articles and documents
3-Substituted phthalic acid derivatives by Sonogashira coupling reaction
Wolff, Oliver,Waldvogel, Siegfried R.
, p. 761 - 765 (2007)
Phthalic acid derivatives with carbon substituents in position 3 are easily accessible by Sonogashira coupling reaction of the corresponding bromo derivative. For reasonable conversions the phthaloyl moiety is masked as the N-phenylphthalimide, which can