1305344-54-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 1305344-54-0 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,3,0,5,3,4 and 4 respectively; the second part has 2 digits, 5 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 1305344-54:
(9*1)+(8*3)+(7*0)+(6*5)+(5*3)+(4*4)+(3*4)+(2*5)+(1*4)=120
120 % 10 = 0
So 1305344-54-0 is a valid CAS Registry Number.
1305344-54-0Relevant articles and documents
A novel application of DDQ as electrophile in the Nenitzescu reaction
Kucklaender,Bollig,Frank,Gratz,Jose
experimental part, p. 2666 - 2674 (2011/06/11)
Reaction of 2,3-dichloro-5,6-dicyano-benzoquinone (DDQ) with secondary enaminones yields surprisingly 2-aza-spiro[4,5]decatrienes. The reaction occurs via cyclisation of the primary Michael-adduct with the nitrile group. Reaction of DDQ with tertiary and