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135549-17-6

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135549-17-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 135549-17-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,5,5,4 and 9 respectively; the second part has 2 digits, 1 and 7 respectively.
Calculate Digit Verification of CAS Registry Number 135549-17:
(8*1)+(7*3)+(6*5)+(5*5)+(4*4)+(3*9)+(2*1)+(1*7)=136
136 % 10 = 6
So 135549-17-6 is a valid CAS Registry Number.

135549-17-6Downstream Products

135549-17-6Relevant articles and documents

Reaction of 4-amino-5-mercapto-1,2,4-triazoles with chalcone dibromides and α-bromochalcones

Holla, B Shivarama,K, Shridhara,Kalluraya, Balakrishna

, p. 672 - 675 (2007/10/02)

Four α-bromochalcones (2) have been condensed with some 3-substituted-4-amino-5-mercapto-1,2,4-triazoles (3) in the presence of ethanolic KOH to yield hitherto unreported 6,8-diaryl-1,2,4-triazolothiadiazepines (4), whose structure has been established on the basis of analytical and spectral data.The chalcone dibromide (1) when treated with 4-amino-5-mercapto-1,2,4-triazoles (3) in the presence of triethylamine undergoes debromination to give the corresponding chalcones.

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