134145-12-3 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 134145-12-3 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,4,1,4 and 5 respectively; the second part has 2 digits, 1 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 134145-12:
(8*1)+(7*3)+(6*4)+(5*1)+(4*4)+(3*5)+(2*1)+(1*2)=93
93 % 10 = 3
So 134145-12-3 is a valid CAS Registry Number.
134145-12-3Relevant articles and documents
Synthesis of 1,2-Dimethylpyrene, 1,3-Dimethylpyrene and 1,2,3-Trimethylpyrene
Hempenius, Mark A.,Lugtenburg, Johan,Cornelisse, Jan
, p. 635 - 638 (2007/10/02)
The title compounds have been prepared, starting from 1H-phenalene 1.The method described in this paper is an efficient procedure for introducing methyl groups into the A-ring of pyrene.
