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837371-88-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 837371-88-7 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 8,3,7,3,7 and 1 respectively; the second part has 2 digits, 8 and 8 respectively.
Calculate Digit Verification of CAS Registry Number 837371-88:
197 % 10 = 7
So 837371-88-7 is a valid CAS Registry Number.

837371-88-7Downstream Products

837371-88-7Relevant articles and documents



Page/Page column 8, (2010/11/08)

Provided is a process for producing 1,2,4-triazole compound (5), or a salt or hydrate thereof which comprises reacting compound (1) with Rc-X (2) to give compound (3), reacting compound (3) with a nitrilization agent to give compound (4), and then removing the group Rc, as shown by the reaction scheme: (Wherein Ra, Rb and Rd represent a group, Rc represents a group which can be removed by an acid) A 1,2,4-triazole compound (5) having an optionally substituted 2-cyanopyridin-4-yl group at 3-position and an optionally substituted aromatic group at 5-position which inhibits a xanthine oxidase and is useful for treatment of gout and hyperuricemia can be obtained from compound (1) in a high yield without requiring isolation of reaction products in the course of reactions.

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