1632147-04-6 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1632147-04-6 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,3,2,1,4 and 7 respectively; the second part has 2 digits, 0 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 1632147-04:
(9*1)+(8*6)+(7*3)+(6*2)+(5*1)+(4*4)+(3*7)+(2*0)+(1*4)=136
136 % 10 = 6
So 1632147-04-6 is a valid CAS Registry Number.
1632147-04-6Relevant articles and documents
Synthesis of symmetric meso-H-dipyrrin hydrobromides from 2-formylpyrroles
Lund, Kate-Lyn A. R.,Thompson, Alison
, p. 1142 - 1144 (2014)
The reaction of 2-formylpyrroles in acidic methanol gives the corresponding symmetric, meso-H-4,6-dipyrrin hydrobromides. This convenient strategy involves initial deformylation under the acidic conditions, followed by immediate in situ reaction of the re