1240238-71-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1240238-71-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,4,0,2,3 and 8 respectively; the second part has 2 digits, 7 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 1240238-71:
(9*1)+(8*2)+(7*4)+(6*0)+(5*2)+(4*3)+(3*8)+(2*7)+(1*1)=114
114 % 10 = 4
So 1240238-71-4 is a valid CAS Registry Number.
1240238-71-4Relevant articles and documents
Copper-catalyzed asymmetric propargylic amination of propargylic acetates with amines using BICMAP
Mino, Takashi,Taguchi, Hiroyuki,Hashimoto, Masatoshi,Sakamoto, Masami
, p. 1520 - 1523 (2013/12/04)
The copper-catalyzed asymmetric propargylic amination of propargylic acetates 1 with amines 2 using BICMAP as a chiral ligand gave the desired products 3 in good yields and with moderate to high enantioselectivities (up to 90% ee).
