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3911-44-2

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3911-44-2 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 3911-44-2 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 3,9,1 and 1 respectively; the second part has 2 digits, 4 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 3911-44:
(6*3)+(5*9)+(4*1)+(3*1)+(2*4)+(1*4)=82
82 % 10 = 2
So 3911-44-2 is a valid CAS Registry Number.

3911-44-2Relevant articles and documents

A general synthetic method for the formation of substituted 5-aminotetrazoles from thioureas: a strategy for diversity amplification.

Batey,Powell

, p. 3237 - 3240 (2007/10/03)

A general method for the synthesis of 5-aminotetrazoles is outlined using the mercury(II)-promoted attack of azide anion on a thiourea. The reaction proceeds through a guanyl azide intermediate, which undergoes electrocyclization to the tetrazole. The method is high yielding and provides access to mono-, di-, and trisubstituted 5-aminotetrazoles, targets of potential interest for combinatorial library development.

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