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1137-98-0

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1137-98-0 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1137-98-0 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,1,3 and 7 respectively; the second part has 2 digits, 9 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 1137-98:
(6*1)+(5*1)+(4*3)+(3*7)+(2*9)+(1*8)=70
70 % 10 = 0
So 1137-98-0 is a valid CAS Registry Number.

1137-98-0Relevant articles and documents

Palladium-catalyzed sequential C-N/C-O bond formations: Synthesis of oxazole derivatives from amides and ketones

Zheng, Meifang,Huang, Liangbin,Huang, Huawen,Li, Xianwei,Wu, Wanqing,Jiang, Huanfeng

, p. 5906 - 5909 (2014)

A highly efficient method for the synthesis of oxazole derivatives from simple amides and ketones has been established via a Pd(II)-catalyzed sp2 C-H activation pathway in one step. The reaction is supposed to proceed through a C-N bond formation followed by a C-O bond formation closing the ring. Because of the simple and readily available starting materials, easy operation, and high bioactivity of oxazoles, this strategy can be broadly applied to medical chemistry.

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