114567-42-9 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 114567-42-9 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,1,4,5,6 and 7 respectively; the second part has 2 digits, 4 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 114567-42:
(8*1)+(7*1)+(6*4)+(5*5)+(4*6)+(3*7)+(2*4)+(1*2)=119
119 % 10 = 9
So 114567-42-9 is a valid CAS Registry Number.
114567-42-9Relevant articles and documents
Method for preparing 1,3,5,8-tetrahydroxy xanthone and 1,3,7,8-tetrahydroxy xanthone
-
Sheet 0039; 0047-0049, (2019/09/14)
The invention discloses a method for preparing 1,3,5,8-tetrahydroxy xanthone and 1,3,7,8-tetrahydroxy xanthone. The method comprises the following steps: by taking 1,2,4-trimetoxybenzene as an initialraw material, and adding n-butyllithium and a chloro-ca