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134523-13-0

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134523-13-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 134523-13-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,3,4,5,2 and 3 respectively; the second part has 2 digits, 1 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 134523-13:
(8*1)+(7*3)+(6*4)+(5*5)+(4*2)+(3*3)+(2*1)+(1*3)=100
100 % 10 = 0
So 134523-13-0 is a valid CAS Registry Number.

134523-13-0Downstream Products

134523-13-0Relevant academic research and scientific papers

Practical preparation of diosphenols by ring opening of α,β-epoxyketones catalyzed by silica gel supported acids

Zhu, Rui,Xing, Lixin,Wang, Xinyan,Cheng, Chuanjie,Liu, Bo,Hu, Yuefei

, p. 2267 - 2271 (2007)

The mixed acid (H2SO4-HOAc) catalyzed ring opening of α,β-epoxyketone was the most used method for the preparation of diosphenols, but it seriously suffered from poor yields and tedious workup operations. By using silica gel supported mixed acid (H2SO 4-HOAc), a variety of α,β-epoxyketones were converted into the corresponding diosphenols in unprecedented high yields within a few minutes. Georg Thieme Verlag Stuttgart.

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