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197785-44-7

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197785-44-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 197785-44-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 1,9,7,7,8 and 5 respectively; the second part has 2 digits, 4 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 197785-44:
(8*1)+(7*9)+(6*7)+(5*7)+(4*8)+(3*5)+(2*4)+(1*4)=207
207 % 10 = 7
So 197785-44-7 is a valid CAS Registry Number.

197785-44-7Relevant articles and documents

Catalyst-free Vicinal bromoazidation of olefins using TMSN3 and NBS

Saikia, Indranirekha,Phukan, Prodeep

, p. 688 - 692 (2012)

A rapid and efficient method has been developed for the synthesis of vicinal bromoazide directly from olefin using N-bromosuccinimide (NBS) and trimethylsilyl azide (TMSN3) as the bromine and azide sources, respectively, without any catalyst in acetonitrile as solvent. The rate of reaction is remarkably fast in acetonitrile without catalyst to produce bromoazides in high yield.

Visible-Light Photoredox Catalyzed Three-Component Cyclization of 2H-Azirines, Alkynyl Bromides, and Molecular Oxygen to Oxazole Skeleton

Chen, Lili,Li, Hongji,Li, Pinhua,Wang, Lei

supporting information, p. 3646 - 3649 (2016/08/16)

A novel three-component cyclization of 2H-azirines, alkynyl bromides, and molecular oxygen under visible-light photoredox catalysis at room temperature has been developed, which provides a direct approach to a wide range of substituted oxazoles in moderate to good yields.

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