258876-09-4 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 258876-09-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,5,8,8,7 and 6 respectively; the second part has 2 digits, 0 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 258876-09:
(8*2)+(7*5)+(6*8)+(5*8)+(4*7)+(3*6)+(2*0)+(1*9)=194
194 % 10 = 4
So 258876-09-4 is a valid CAS Registry Number.
258876-09-4Relevant articles and documents
New Oxidatively Removable Carboxy Protecting Groups
Kim, C. U.,Misco, P. F.
, p. 2027 - 2030 (2007/10/02)
2,6-Dimethoxybenzyl esters are readily oxidized by 2,3-dichloro-5,6-dicyano benzoquinone (DDQ) to generate the corresponding carboxylic acids.Phenyl esters substituted with hydroxy, methoxy and dimethylamino groups are also efficiently oxidized by ceric ammonium nitrate (CAN) under pH control conditions.
