343269-51-2 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 343269-51-2 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 3,4,3,2,6 and 9 respectively; the second part has 2 digits, 5 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 343269-51:
(8*3)+(7*4)+(6*3)+(5*2)+(4*6)+(3*9)+(2*5)+(1*1)=142
142 % 10 = 2
So 343269-51-2 is a valid CAS Registry Number.
343269-51-2Relevant articles and documents
Preparation method for multisubstituted benzoxazole compound
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Paragraph 0021-0022, (2018/04/02)
The invention discloses a preparation method for a multisubstituted benzoxazole compound namely 2-chloro-7-bromobenzo[d]oxazole-5-formaldehyde. The preparation method prepares a target product with 2-bromo-4-methyl-6-nitrophenol as a starting material thr