Cas 221528-24-1,2,4-dibromo-5-fluorobenzamide

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Check Digit Verification of cas no

The CAS Registry Mumber 221528-24-1 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,2,1,5,2 and 8 respectively; the second part has 2 digits, 2 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 221528-24:
(8*2)+(7*2)+(6*1)+(5*5)+(4*2)+(3*8)+(2*2)+(1*4)=101
101 % 10 = 1
So 221528-24-1 is a valid CAS Registry Number.

221528-24-1Upstream product

221528-24-1Downstream Products

173410-26-9 2,4-dibromo-5-fluorobenzoic acid

221528-24-1Relevant articles and documents

A new synthetic routine for preparation of 2,4-dibromo-5-fluorobenzoic acid

Chi, Huang,Qiong, Zheng,Chongwen, Xu,Guangyong, Xie,Yuanyin, Chen

, p. 547 - 550 (2007/10/03)

A convenient and practical synthetic route for the preparation of 2,4-dibromo-5-fluorobenzoic acid is described. The synthesis and characterization of two intermediates, 2,4-dibromo-5-fluorobenzonitrile and 2,4-dibromo-5-fluorobenzamide, in this route have not been reported before.

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CAS

221528-24-1