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123728-42-7

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123728-42-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 123728-42-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,3,7,2 and 8 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 123728-42:
(8*1)+(7*2)+(6*3)+(5*7)+(4*2)+(3*8)+(2*4)+(1*2)=117
117 % 10 = 7
So 123728-42-7 is a valid CAS Registry Number.

123728-42-7Relevant articles and documents

NITROGEN-TELLURIUM HETEROCYCLES. 2. APPROACHES TO THE SYNTHESIS OF 2-SUBSTITUTED BENZOTELLURAZOLES

Sadekov, I. D.,Abakarov, G. M.,Shneider, A. A.,Kuren', S. G.,Starikov, A. G.,et al.

, p. 103 - 108 (2007/10/02)

Several 2-substituted benzotellurazoles have been prepared by the reaction of N-allyl derivatives of o-methyltelluroaniline with POCl3 or SOCl2 followed by reduction of the ?-telluranes which are formed.The use of the zinc and sodium salts of o-aminotellurophenol and 2-chlorotellurenylazobenzene, in a procedure similar to that used to prepare benzothiazoles and benzoselenazoles, did not lead to the formation of benzotellurazoles.

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