139686-30-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 139686-30-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,6,8 and 6 respectively; the second part has 2 digits, 3 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 139686-30:
(8*1)+(7*3)+(6*9)+(5*6)+(4*8)+(3*6)+(2*3)+(1*0)=169
169 % 10 = 9
So 139686-30-9 is a valid CAS Registry Number.
139686-30-9Relevant 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
