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218131-53-4

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218131-53-4 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 218131-53-4 includes 9 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 6 digits, 2,1,8,1,3 and 1 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 218131-53:
(8*2)+(7*1)+(6*8)+(5*1)+(4*3)+(3*1)+(2*5)+(1*3)=104
104 % 10 = 4
So 218131-53-4 is a valid CAS Registry Number.

218131-53-4Relevant articles and documents

IDO/TDO Inhibitor

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Paragraph 0631-0635, (2020/08/19)

A compound of formula (I) given below or a pharmaceutically acceptable salt of the compound is useful as an IDO/TDO inhibitor. Thus, the compound of formula (I) or the pharmaceutically acceptable salt of the compound can be used as, for example, a therapeutic agent for a disease or a disorder selected from tumor, infectious disease, neurodegenerative disorder, cataract, organ transplant rejection, autoimmune disease, postoperative cognitive impairment, and disease related to women's reproductive health [in the following formula (I), ring A represents an aromatic ring, an aliphatic ring, a heterocyclic ring, or a condensed ring of two or more rings selected from an aromatic ring, an aliphatic ring and a heterocyclic ring; X, R1 and R2 represent a substituent on a ring atom constituting ring A; m represents an integer of 0 to 6; X represents, for example, a halogen atom; and R1 and R2 are the same or different and are selected from, for example, the group consisting of groups of formula (a) or formula (b); and in the following formula (a) and formula (b), Y is selected from the group consisting of O, S, and Se, Z is selected from the group consisting of O, S, and Se, n represents an integer of 1 to 8, r represents an integer of 1 to 8, s represents an integer of 1 to 8, R4 represents, for example, —C(═NH)—HN2, and R6 represents, for example, a substituted or unsubstituted aryl group].

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