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156570-79-5

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156570-79-5 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 156570-79-5 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,5,6,5,7 and 0 respectively; the second part has 2 digits, 7 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 156570-79:
(8*1)+(7*5)+(6*6)+(5*5)+(4*7)+(3*0)+(2*7)+(1*9)=155
155 % 10 = 5
So 156570-79-5 is a valid CAS Registry Number.

156570-79-5Relevant articles and documents

Studies toward the total synthesis of angelmicin B (hibarimicin B): Synthesis of a model CD-D′ arylnaphthoquinone

Narayan, Sridhar,Roush, William R.

, p. 3789 - 3792 (2007/10/03)

(Chemical Equation Presented) A synthesis of arylnaphthoquinone 22 corresponding to the CD-D′ unit of angelmicin B via the Suzuki coupling of the D′ arylboronic acid 15 with the CD bromonaphthoquinone 21 is described. The mild conditions for the Suzuki cross-coupling leading to 22 may prove to be useful for the eventual late-stage coupling of the two highly functionalized halves of angelmicin B.

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