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88783-22-6

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88783-22-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 88783-22-6 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,8,7,8 and 3 respectively; the second part has 2 digits, 2 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 88783-22:
(7*8)+(6*8)+(5*7)+(4*8)+(3*3)+(2*2)+(1*2)=186
186 % 10 = 6
So 88783-22-6 is a valid CAS Registry Number.

88783-22-6Relevant articles and documents

Synthesis of β-aminoketones and construction of highly substituted 4-piperidones by mannich reaction induced by persistent radical cation salts

Jia, Xiao-Dong,Wang, Xiao-E.,Yang, Cai-Xia,Huo, Cong-De,Wang, Wen-Juan,Ren, Yan,Wang, Xi-Cun

supporting information; experimental part, p. 732 - 735 (2010/04/02)

A Mannich reaction of imines and ketones induced by persistent radical cation salts was Investigated, and a series of Mannich bases, β-amlnoketones, were synthesized. A novel cyclization to form the 4-piperidone skeleton was achieved In a tandem process. The reaction can be rationalized as a radical cation process supported by various evidence.

The Mannich reaction of butanone, aromatic aldehydes and aromatic amines

Lin,Junhua,Huangshu,Qilin

, p. 2109 - 2117 (2007/10/02)

Under the catalysis of small amount of concentrated hydrochloric acid, the Mannich reaction of butanone, aromatic aldehydes and aromatic amines can be carried out directly at 0-20°C. Twelve corresponding Mannich bases (1), 1-aryl-1-arylamino-3-pentanones, were prepared in high yields.

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