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1643833-49-1

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1643833-49-1 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1643833-49-1 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,6,4,3,8,3 and 3 respectively; the second part has 2 digits, 4 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1643833-49:
(9*1)+(8*6)+(7*4)+(6*3)+(5*8)+(4*3)+(3*3)+(2*4)+(1*9)=181
181 % 10 = 1
So 1643833-49-1 is a valid CAS Registry Number.

1643833-49-1Downstream Products

1643833-49-1Relevant articles and documents

Unlocking the N2selectivity of benzotriazoles: Regiodivergent and highly selective coupling of benzotriazoles with allenes

Xu, Kun,Thieme, Niels,Breit, Bernhard

supporting information, p. 7268 - 7271 (2014/07/21)

The rhodium-catalyzed, highly N2- and N1-selective coupling of benzotriazoles with allenes is reported. The exceptionally high N2 and N1 selectivities were achieved by using a rhodium(I)/DPEphos and rhodium(I)/JoSPOphos catalyst, respectively. This method permits the atom-economic synthesis of valuable branched N2- and N1-allylated benzotriazole derivatives and allows for preliminary studies of their reactivity.

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