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3-methyl-4'-phenyl-4',5'-dihydro-3H,3'H-spiro[benzothiazole-2,2'-pyran]-6'-one is a complex organic compound with a unique chemical structure. It is characterized by a spiro ring system, which consists of a benzothiazole and a pyran ring fused together. The benzothiazole ring contains a methyl group at the 3-position and a phenyl group at the 4'-position, while the pyran ring is dihydro and has a carbonyl group at the 6'-position. 3-methyl-4'-phenyl-4',5'-dihydro-3H,3'H-spiro[benzothiazole-2,2'-pyran]-6'-one is likely to be found in the field of organic chemistry, potentially as a synthetic intermediate or a compound with specific biological activity. Its exact properties and applications would depend on the context in which it is being studied or used.

1557-20-6

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1557-20-6 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1557-20-6 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 1,5,5 and 7 respectively; the second part has 2 digits, 2 and 0 respectively.
Calculate Digit Verification of CAS Registry Number 1557-20:
(6*1)+(5*5)+(4*5)+(3*7)+(2*2)+(1*0)=76
76 % 10 = 6
So 1557-20-6 is a valid CAS Registry Number.

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