256934-17-5 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 256934-17-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,6,9,3 and 4 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 256934-17:
(8*2)+(7*5)+(6*6)+(5*9)+(4*3)+(3*4)+(2*1)+(1*7)=165
165 % 10 = 5
So 256934-17-5 is a valid CAS Registry Number.
256934-17-5Relevant articles and documents
A facile synthesis of 3-alkoxy and 3-amino pyrroles
Breuil-Desvergnes, Valerie,Compain, Philippe,Vatele, Jean-Michel,Gore, Jacques
, p. 8789 - 8792 (1999)
N-Amino-3-methoxy-3-pyrrolines 2 obtained from the reaction of 1-lithio methoxyallene with arylhydrazones may be converted to either 3-methoxy pyrroles 6 or 3-amino pyrroles 7 by treatment with m-chloroperbenzoic acid or 0.25 M HCl, respectively.