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33328-12-0

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33328-12-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 33328-12-0 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 3,3,3,2 and 8 respectively; the second part has 2 digits, 1 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 33328-12:
(7*3)+(6*3)+(5*3)+(4*2)+(3*8)+(2*1)+(1*2)=90
90 % 10 = 0
So 33328-12-0 is a valid CAS Registry Number.

33328-12-0Downstream Products

33328-12-0Relevant articles and documents

An Efficient Chan–Lam S-Arylation of Arylthioureas with Arylboronic Acids

Liu, Xing,Zhang, Shi-Bo,Zhu, Hui,Cheng, Yu,Peng, Han-Ying,Dong, Zhi-Bing

, p. 4483 - 4489 (2018)

A convenient and efficient protocol has been developed for the preparation of aryl-isothioureas based on the Chan–Lam C–S coupling reaction. The desired aryl-isothioureas were synthesized in good yields (up to 95 %) in the presence of Cu(OAc)2·H2O as catalyst and bipyridine as ligand. A variety of functional groups on the aryl-thiourea and arylboronic acid reagents are tolerated. The method features mild reaction conditions and good yields, thereby illustrating its practical synthetic value in organic synthesis.

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