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139664-31-6

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139664-31-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 139664-31-6 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,9,6,6 and 4 respectively; the second part has 2 digits, 3 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 139664-31:
(8*1)+(7*3)+(6*9)+(5*6)+(4*6)+(3*4)+(2*3)+(1*1)=156
156 % 10 = 6
So 139664-31-6 is a valid CAS Registry Number.

139664-31-6Downstream Products

139664-31-6Relevant articles and documents

Process for the preparation of 1-Hydroxymethylpyrazoles

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, (2008/06/13)

A process for the preparation of a 1-hydroxymethylpyrazole comprising combining a methylpyrazole with water and an aqueous formaldehyde solution to form a 1-hydroxymethylpyrazole in a mother liquor, filtering said 1-hydroxymethylpyrazole from said mother liquor, and combining said mother liquor with a second aqueous formaldehyde solution and methylpyrazole.

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