15012-64-3 Usage
General Description
2,3,6,7-tetrachloro-5,8-dihydroxy-1,4-naphthoquinone, also known as TCDD or dioxin, is a highly toxic and persistent environmental contaminant. It belongs to the group of chemicals known as polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs). TCDD is a byproduct of industrial processes such as waste incineration and chemical manufacturing, and it is also a component of herbicides such as Agent Orange. It is classified as a human carcinogen and is known to cause a range of adverse health effects including reproductive and developmental problems, immune system disorders, and skin lesions. TCDD can bioaccumulate in the food chain, posing a significant risk to human and environmental health. Efforts to monitor and mitigate the release of TCDD into the environment are critical for protecting public health and the environment.
Check Digit Verification of cas no
The CAS Registry Mumber 15012-64-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 1,5,0,1 and 2 respectively; the second part has 2 digits, 6 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 15012-64:
(7*1)+(6*5)+(5*0)+(4*1)+(3*2)+(2*6)+(1*4)=63
63 % 10 = 3
So 15012-64-3 is a valid CAS Registry Number.
15012-64-3Relevant articles and documents
Cycloacylation of chloro-substituted hydroquinone dimethyl ethers with dichloromaleic anhydride
Novikov,Balaneva,Shestak,Anufriev, V. Ph.,Glazunov
, p. 993 - 1003 (2017/01/11)
Under the drastic conditions of Zahn—Ochwat cycloacylation of 2-chloroand 2,3-dichlorohydroquinones with dichloromaleic anhydride (a melt of anhydrous AlCl3 and NaCl, 185—195 °C), the substrates undergo various degrees of disproportionation, which reduces the yields of the target triand tetrachloronaphthazarins. Quantum chemical calculations showed that the cycloacylation in question proceeds as a double aromatic electrophilic substitution of the vicinal protons with the corresponding oxocarbenium ions (acylium cations).
