123217-52-7 Usage
Check Digit Verification of cas no
The CAS Registry Mumber 123217-52-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,2,3,2,1 and 7 respectively; the second part has 2 digits, 5 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 123217-52:
(8*1)+(7*2)+(6*3)+(5*2)+(4*1)+(3*7)+(2*5)+(1*2)=87
87 % 10 = 7
So 123217-52-7 is a valid CAS Registry Number.
123217-52-7Relevant articles and documents
Preparation of 3-Hydroxyindolin-1-ones and o-Acylbenzamides. A Study of Ring-Chain Tautomerism
Nishio, Takehiko,Yamamoto, Hiroshi
, p. 883 - 892 (2007/10/02)
3-Hydroxyisoindolinones (ring form) as well as their chain tautomers, o-acylbenzamides, were prepared from the reactions of 3-benzalphthalide 1, 3-halophthalides 3, and o-acylbenzoic acids 6 or their esters 7 with amines 2, and those of phthalimides 4 wit
