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191220-44-7

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191220-44-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 191220-44-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,1,2,2 and 0 respectively; the second part has 2 digits, 4 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 191220-44:
(8*1)+(7*9)+(6*1)+(5*2)+(4*2)+(3*0)+(2*4)+(1*4)=107
107 % 10 = 7
So 191220-44-7 is a valid CAS Registry Number.
InChI:InChI=1/C11H7ClN2O/c12-11-8(4-3-7-14-11)10(15)9-5-1-2-6-13-9/h1-7H

191220-44-7Upstream product

191220-44-7Downstream Products

191220-44-7Relevant articles and documents

2-Pyridyl and 3-pyridylzinc bromides: direct preparation and coupling reaction

Kim, Seung-Hoi,Rieke, Reuben D.

supporting information; experimental part, p. 3135 - 3146 (2010/06/13)

A facile synthetic approach to the direct preparation of 2-pyridyl and 3-pyridylzinc bromides has been demonstrated using Rieke zinc with 2-bromopyridine and 3-bromopyridine, respectively. A variety of different electrophiles have been coupled with the resulting organozinc reagents to give the corresponding cross-coupling products in moderate to good yields.

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