139704-13-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 139704-13-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,7,0 and 4 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 139704-13:
(8*1)+(7*3)+(6*9)+(5*7)+(4*0)+(3*4)+(2*1)+(1*3)=135
135 % 10 = 5
So 139704-13-5 is a valid CAS Registry Number.
139704-13-5Relevant articles and documents
Intramolecular Oxypalladation and Cross-Coupling of Acetylenic Alkoxides
Luo, Fen-Tair,Schreuder, Inessa,Wang, Ren-Tzong
, p. 2213 - 2215 (2007/10/02)
Stereodefined 2-alkylidenetetrahydrofurans and pyrans were synthesized by treatment of alkyl or aryl acetylenic alcohols with n-BuLi in THF at 0 deg C followed by addition of a solution of 10 mol percent of Pd(OAc)2 or PdCl2 and PPh3 in THF and 1 equiv of
