134305-40-1 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 134305-40-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,4,3,0 and 5 respectively; the second part has 2 digits, 4 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 134305-40:
(8*1)+(7*3)+(6*4)+(5*3)+(4*0)+(3*5)+(2*4)+(1*0)=91
91 % 10 = 1
So 134305-40-1 is a valid CAS Registry Number.
134305-40-1Relevant articles and documents
Synthesis of heterocycles through reactions of nucleophiles with acrylonitriles. A convenient one-step synthesis of benzocoumarins
Abdel-Latif, Fathy Fahim
, p. 9 - 10 (2007/10/02)
A convenient one-step synthesis of benzocoumarins is reported which utilizes the ternary condensation of ldehydes, malononitrile and 3-cyano-4-methylcoumarin
