129660-04-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 129660-04-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,9,6,6 and 0 respectively; the second part has 2 digits, 0 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 129660-04:
(8*1)+(7*2)+(6*9)+(5*6)+(4*6)+(3*0)+(2*0)+(1*4)=134
134 % 10 = 4
So 129660-04-4 is a valid CAS Registry Number.
129660-04-4Relevant articles and documents
Substituted α-pyrones and process for their preparation
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, (2008/06/13)
The invention relates to α-pyrones of formula I STR1 wherein R1 is chloro or bromo and R2 is hydrogen, chloro or bromo. The halogen in 4-position can be replaced, for example, by alkoxy, alkylthio or secondary amino. The α-pyrones ar