42222-79-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 42222-79-7 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 4,2,2,2 and 2 respectively; the second part has 2 digits, 7 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 42222-79:
(7*4)+(6*2)+(5*2)+(4*2)+(3*2)+(2*7)+(1*9)=87
87 % 10 = 7
So 42222-79-7 is a valid CAS Registry Number.
42222-79-7Relevant articles and documents
A Convenient Synthesis of 3-Phenacylidenephthalides
Hori, Kimihiko,Takaishi, Naotake
, p. 1791 - 1792 (2007/10/02)
3-Phenacylidenephthalides were prepared by the dehydration of 2-(1,3-dioxo-3-phenylpropyl)benzoic acids, obtained in turn by the condensation of phthalic anhydride with acetophenones.