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91734-80-4

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91734-80-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 91734-80-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 9,1,7,3 and 4 respectively; the second part has 2 digits, 8 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 91734-80:
(7*9)+(6*1)+(5*7)+(4*3)+(3*4)+(2*8)+(1*0)=144
144 % 10 = 4
So 91734-80-4 is a valid CAS Registry Number.

91734-80-4Downstream Products

91734-80-4Relevant articles and documents

The Nitration of 4-Nitro- and 4-Bromo-2,6-dimethylphenols; X-Ray Crystal Structures of t-6-Hydroxy-2,6-dimethyl-r-2,4,t-5-trinitrocyclohex-3-enone, r-2,t-6-Dihydroxy-2,6-dimethyl-4,t-5-dinitrocyclohex-3-enone and 4-Bromo-t-6-hydroxy-2,6-dimethyl-r-2,t-5-dinitrocyclohex-3-enone

Hartshorn, Michael P.,Readman, Jennifer M.,Robinson, Ward T.,Vaughan, John,Whyte, Andrew R.

, p. 1693 - 1704 (2007/10/02)

The nitration of 2,6-dimethyl-4-nitrophenol (1b), with either fuming nitric acid in acetic acid or nitrogen dioxide in dichloromethane, gives the C2-epimeric hydroxy trinitro ketones (4) and (5), the dinitro phenol (6) and the dihydroxy dinitro ketone (7).The nitration of the 4-bromo phenol (1c) is accompanied by some nitro-debromination and compounds (4), (5) and (13)-(17) are isolated.X-ray structure determinations are reported for compounds (5), (7) and (14).

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