203132-47-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 203132-47-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,3,1,3 and 2 respectively; the second part has 2 digits, 4 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 203132-47:
(8*2)+(7*0)+(6*3)+(5*1)+(4*3)+(3*2)+(2*4)+(1*7)=72
72 % 10 = 2
So 203132-47-2 is a valid CAS Registry Number.
203132-47-2Relevant articles and documents
Triisopropylsilyl protected hexa-1,5-diyne-3,4-dione: A convenient precursor to 2,3-dialkynyl 1,4-diazabutadienes
Faust, Rüdiger,G?belt, Bernd,Weber, Christian
, p. 64 - 66 (1998)
Diazabutadienes with a 2,3-dialkynyl substitution pattern are easily accessible by reaction of silyl-protected dialkynyl-1,2-diones with primary aromatic amines.