245728-25-0 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 245728-25-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,4,5,7,2 and 8 respectively; the second part has 2 digits, 2 and 5 respectively.
Calculate Digit Verification of CAS Registry Number 245728-25:
(8*2)+(7*4)+(6*5)+(5*7)+(4*2)+(3*8)+(2*2)+(1*5)=150
150 % 10 = 0
So 245728-25-0 is a valid CAS Registry Number.
245728-25-0Relevant articles and documents
New synthetic procedure for oxazolo[4,5-h]coumarins
Chibisova,Solov'eva,Pozhidaeva,Manaev,Traven'
, p. 263 - 268 (2007/10/03)
Oximes of 8-acyl-7-hydroxycoumarins when treated with excess acetic anhydride in the presence of concentrated sulfuric acid afford oxazolo[4,5-h]coumarins in good yield. Similar treatment without sulfuric acid results in O,N-diacetates of oximes of 8-acyl