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512803-01-9

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512803-01-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 512803-01-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 5,1,2,8,0 and 3 respectively; the second part has 2 digits, 0 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 512803-01:
(8*5)+(7*1)+(6*2)+(5*8)+(4*0)+(3*3)+(2*0)+(1*1)=109
109 % 10 = 9
So 512803-01-9 is a valid CAS Registry Number.

512803-01-9Downstream Products

512803-01-9Relevant 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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