139622-58-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 139622-58-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,6,2 and 2 respectively; the second part has 2 digits, 5 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 139622-58:
(8*1)+(7*3)+(6*9)+(5*6)+(4*2)+(3*2)+(2*5)+(1*8)=145
145 % 10 = 5
So 139622-58-5 is a valid CAS Registry Number.
139622-58-5Relevant articles and documents
A facile chemoenzymatic route to optically active 4,5-disubstituted-2E-hexenoate derivastives. II
Akita,Umezawa,Takano,Oishi
, p. 680 - 684 (2007/10/02)
The reaction of (±) methyl 4,5-trans-epoxy-(2E)-hexenoate (1) with nucleophiles having heteroatoms in the presence of BF3 · Et2O gave the 4,5-anti-5-hydroxy-4- and/or 2,5-anti-5-hydroxy-2-substituted products. Among them, the (±)-4,5
