139111-68-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 139111-68-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,1,1 and 1 respectively; the second part has 2 digits, 6 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 139111-68:
(8*1)+(7*3)+(6*9)+(5*1)+(4*1)+(3*1)+(2*6)+(1*8)=115
115 % 10 = 5
So 139111-68-5 is a valid CAS Registry Number.
139111-68-5Relevant articles and documents
The N-tert-butylcarbamoyl directed metalation group for the regiospecific synthesis of 2-substituted pyrroles and indoles
Gharpure,Stoller,Bellamy,Firnau,Snieckus
, p. 1079 - 1082 (2007/10/02)
The N-tert-butylcarbamoyl serves as a useful, readily removable (LiOH/MeOH/THF) new directed metalation group for the synthesis of 2-substituted pyrroles and indoles.