139623-17-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 139623-17-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,6,2 and 3 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 139623-17:
(8*1)+(7*3)+(6*9)+(5*6)+(4*2)+(3*3)+(2*1)+(1*7)=139
139 % 10 = 9
So 139623-17-9 is a valid CAS Registry Number.
139623-17-9Relevant articles and documents
Thermal Cross-coupled Dimerisation of Alkali and Alkaline Earth Metal Salts of Methacrylic-Crotonic Acid Binary Systems in the Solid State
Kudoh, Masaaki,Naruchi, Kiyoshi,Akutsu, Fumihiko,Miura, Masatoshi
, p. 105 - 106 (2007/10/02)
Thermal reaction of sodium and potassium salts of methacrylic-crotonic acids in the solid state selectively affords a cross-coupled dimer, dimethyl hex-1-ene-2,4-dicarboxylate.
