139622-41-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 139622-41-6 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 2 respectively; the second part has 2 digits, 4 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 139622-41:
(8*1)+(7*3)+(6*9)+(5*6)+(4*2)+(3*2)+(2*4)+(1*1)=136
136 % 10 = 6
So 139622-41-6 is a valid CAS Registry Number.
139622-41-6Relevant articles and documents
A facile chemoenzymatic route to optically active 4,5-disubstituted-2E-hexenoate derivatives. I
Akita,Umezawa,Takano,Ohyama,Matsukura,Oishi
, p. 55 - 63 (2007/10/02)
The reaction of (±) methyl 4,5-trans-epoxy-2E-hexenoate (2) with aromatic nucleophiles having an electron-donating group in the presence of BF3 · Et2O gave the 4,5-anti-5-hydroxy-4- or/and 2,5-anti-5-hydroxy-2-substituted products. T
