139881-91-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 139881-91-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,8,8 and 1 respectively; the second part has 2 digits, 9 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 139881-91:
(8*1)+(7*3)+(6*9)+(5*8)+(4*8)+(3*1)+(2*9)+(1*1)=177
177 % 10 = 7
So 139881-91-7 is a valid CAS Registry Number.
139881-91-7Relevant articles and documents
Ring cleavage of 2-phenyl-3,5,6,7,8,8a-hexahydro-imidazo[1,2-a]pyridin-1-oxide by substitution
Mohrle,Gehlen
, p. 107 - 111 (2007/10/02)
The cyclic α-amino nitrone 2 reacts with Grignard reagents yielding the ring opened 2-substituted piperidine oximes 7 and 8, but not the substituted cyclic hydroxylamines of type 4, a formerly supposed. The structures of 7 and 8 were proved by unequivocal
