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67645-12-9

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67645-12-9 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 67645-12-9 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 6,7,6,4 and 5 respectively; the second part has 2 digits, 1 and 2 respectively.
Calculate Digit Verification of CAS Registry Number 67645-12:
(7*6)+(6*7)+(5*6)+(4*4)+(3*5)+(2*1)+(1*2)=149
149 % 10 = 9
So 67645-12-9 is a valid CAS Registry Number.

67645-12-9Relevant articles and documents

Phase-Transfer-Catalyzed Asymmetric Annulations of Alkyl Dihalides with Oxindoles: Unified Access to Chiral Spirocarbocyclic Oxindoles

Gao, Min,Hu, Lin,Li, Xuemin,Li, Yongyi

supporting information, p. 875 - 880 (2022/02/05)

A general phase-transfer-catalyzed asymmetric (n+1) (n = 4 or 5) annulation reaction, featuring the direct coupling of simple oxindoles with alkyl dihalides that are allylic/benzylic and non-allylic/benzylic, has been developed to provide previously inacc

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