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205250-12-0

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205250-12-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 205250-12-0 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,0,5,2,5 and 0 respectively; the second part has 2 digits, 1 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 205250-12:
(8*2)+(7*0)+(6*5)+(5*2)+(4*5)+(3*0)+(2*1)+(1*2)=80
80 % 10 = 0
So 205250-12-0 is a valid CAS Registry Number.

205250-12-0Relevant articles and documents

A Regio- and Stereoselective Carbonylative Approach to Alkyl (Z)-2-[3-Oxoisobenzofuran-1-(3H)-ylidene]acetates

Mancuso, Raffaella,Ziccarelli, Ida,Fini, Francesco,Della Ca', Nicola,Marino, Nadia,Carfagna, Carla,Gabriele, Bartolo

, p. 690 - 695 (2019)

The first example of the oxidative carbonylation of 2-ethynylbenzoic acid derivatives, leading to alkyl (Z)-2-[3-oxoisobenzofuran-1-(3H)-ylidene]acetates in a regio- and stereoselective manner, is reported. Under the catalytic action of PdI2 (2

An Efficient Stereospecific Preparation of (Z)-3-Methylidene-selenophthalides and (Z)-3-Methylidenetellurophthalides [1]

Sashida, Haruki,Kawamukai, Atsushi

, p. 165 - 167 (2007/10/03)

(Z)-3-Methylideneselenophthalides 5A and (Z)-3-methylidenetellurophthalides 5B were easily prepared by the regioselective and stereoselective reaction of 2-ethynylbenzoyl chlorides 3 with sodium hydroselenide and sodium hydrotelluride in good yields, resp

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