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1431545-55-9

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1431545-55-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1431545-55-9 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,4,3,1,5,4 and 5 respectively; the second part has 2 digits, 5 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 1431545-55:
(9*1)+(8*4)+(7*3)+(6*1)+(5*5)+(4*4)+(3*5)+(2*5)+(1*5)=139
139 % 10 = 9
So 1431545-55-9 is a valid CAS Registry Number.

1431545-55-9Downstream Products

1431545-55-9Relevant articles and documents

Catalyst-free Mannich reaction of hydroxyanthraquinone: Facile access to emodin Mannich bases and anthraoxazines

Zhao, Li-Ming,Zhang, Li-Ming,Ma, Feng-Yan,Wang, Xiang-Shan,Jin, Hai-Shan

, p. 2802 - 2805 (2013/06/05)

A simple and efficient method for derivatization of hydroxyanthraquinone natural product emodin through catalyst-free Mannich reaction is described. The method allows the modification of emodin skeleton at 2-position. This new derivatization strategy to emodin provides a clear advantage over traditional approaches, due to its easy operation and efficiency that does not involve the protection and deprotection.

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