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1239572-33-8

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1239572-33-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1239572-33-8 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,3,9,5,7 and 2 respectively; the second part has 2 digits, 3 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1239572-33:
(9*1)+(8*2)+(7*3)+(6*9)+(5*5)+(4*7)+(3*2)+(2*3)+(1*3)=168
168 % 10 = 8
So 1239572-33-8 is a valid CAS Registry Number.

1239572-33-8Downstream Products

1239572-33-8Relevant articles and documents

An efficient synthesis of aziridines from ephedrines

Cruz, Alejandro,Padilla-Martinez, Itzia Irene,Garcia-Baez, Efren V.

experimental part, p. 909 - 913 (2010/08/19)

The reaction of chlorodeoxyephedrine hydrochlorides with one, two, and three molar equivalents of base was studied. Isochlorodeoxypseudoepherines were identified and assigned by 1H and 13C NMR data as intermediate compounds in the formation of cis-aziridines. Erythro and threo ephedrinethylethers were isolated as new compounds and analyzed by spectroscopic data. In addition, the erythro isomer was studied by X-ray diffraction.

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