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175650-09-6

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175650-09-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 175650-09-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,7,5,6,5 and 0 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 175650-09:
(8*1)+(7*7)+(6*5)+(5*6)+(4*5)+(3*0)+(2*0)+(1*9)=146
146 % 10 = 6
So 175650-09-6 is a valid CAS Registry Number.

175650-09-6Relevant articles and documents

Synthesis of highly hindered polyanionic chelating ligands

Jiménez, Claudio A.,Belmar, Julio B.

, p. 3933 - 3938 (2007/10/03)

Practical and efficient protocols to obtain highly hindered polyanionic chelating ligands based on bis-(3,5-di-tert-butyl-2-hydroxybenzamido) compounds are reported here. N-3,5-di-tert-Butylsalicyloyloxysuccinimide was treated with aliphatic diamines to form aliphatic hydrocarbon-linked bis-amides 4a-4g. Aromatic diamines required more powerful electrophile, thus the corresponding benzylated acid chloride was used to form aromatic hydrocarbon-linked bis-amides 8a-8d. The yields ranged from good to very good and showed that choosing the right acylating agent is a key point in this synthesis. All the compounds were characterized by elemental analysis, IR, MS and NMR.

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