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3-bromo-2,4-bis(hydroxymethyl)-5-phenylthiophene is a chemical with a specific purpose. Lookchem provides you with multiple data and supplier information of this chemical.

1251920-63-4

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1251920-63-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1251920-63-4 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,5,1,9,2 and 0 respectively; the second part has 2 digits, 6 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 1251920-63:
(9*1)+(8*2)+(7*5)+(6*1)+(5*9)+(4*2)+(3*0)+(2*6)+(1*3)=134
134 % 10 = 4
So 1251920-63-4 is a valid CAS Registry Number.

1251920-63-4Relevant academic research and scientific papers

Ultimate diastereoselectivity in the ring closure of photochromic diarylethene possessing facial chirality

Shiozawa, Tatsuya,Hossain, Mohammed K.,Ubukata, Takashi,Yokoyama, Yasushi

supporting information; experimental part, p. 4785 - 4787 (2010/09/16)

A bisthienylethene with hitherto unprecedented facial chirality imposed by a triethyleneglycol bridge on a thiophene ring was synthesized and its photochromic ring closure was shown to occur with 100% diastereoselectivity upon UV-light irradiation.

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