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79817-85-9

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79817-85-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 79817-85-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,9,8,1 and 7 respectively; the second part has 2 digits, 8 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 79817-85:
(7*7)+(6*9)+(5*8)+(4*1)+(3*7)+(2*8)+(1*5)=189
189 % 10 = 9
So 79817-85-9 is a valid CAS Registry Number.

79817-85-9Relevant articles and documents

Photoreactivity of some 2-alkoxy/phenoxy-3,5,6-tri-chloro/bromo-1,4-benzoquinones

Kallmayer,Fritzen

, p. 235 - 238 (2007/10/02)

We report the reaction between 2,3,5,6-tetrachloro/bromo-1,4-benzoquinones (5A/B) with deprotonated alkoholes/phenoles 7a-e to give yellow 2-alkoxy/phenoxy-3,5,6-trichloro/bromo-1,4-benzoquinones 9A/Ba-e. These reaction products are probably photodegraded yielding the corresponding 2-hydroxy-3,5,6-trichloro/bromo-1,4-benzoquinones 15A/B. The quinones 9A/B are not O-conjugated dehydrated, and the quinones 9Ba-e are not C-3-debrominated. These reactions are observed by photodegradation from 2-dialkylamino-3,5,6-trichloro/bromo-1,4-benzoquinones.

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