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6136-96-5

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6136-96-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 6136-96-5 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 6,1,3 and 6 respectively; the second part has 2 digits, 9 and 6 respectively.
Calculate Digit Verification of CAS Registry Number 6136-96:
(6*6)+(5*1)+(4*3)+(3*6)+(2*9)+(1*6)=95
95 % 10 = 5
So 6136-96-5 is a valid CAS Registry Number.

6136-96-5Relevant articles and documents

A Scalable Metal-, Azide-, and Halogen-Free Method for the Preparation of Triazoles

Clark, Peter R.,Hayes, Jerome F.,Tomkinson, Nicholas C. O.,Williams, Glynn D.

supporting information, p. 6740 - 6744 (2020/03/23)

A scalable metal-, azide-, and halogen-free method for the synthesis of substituted 1,2,3-triazoles has been developed. The reaction proceeds through a 3-component coupling of α-ketoacetals, tosyl hydrazide, and a primary amine. The reaction shows outstanding functional-group tolerance with respect to both the α-ketoacetal and amine coupling partners, providing access to 4-, 1,4-, 1,5-, and 1,4,5-substituted triazoles in excellent yield. This robust method results in densely functionalised 1,2,3-triazoles that remain challenging to prepare by azide–alkyne cycloaddition (AAC, CuAAC, RuAAC) methods and can be scaled in either batch or flow reactors. Methods for the chemoselective reaction of either aliphatic amines or anilines are also described, revealing some of the potential of this novel and highly versatile transformation.

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