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2720-53-8

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2720-53-8 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 2720-53-8 includes 7 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 4 digits, 2,7,2 and 0 respectively; the second part has 2 digits, 5 and 3 respectively.
Calculate Digit Verification of CAS Registry Number 2720-53:
(6*2)+(5*7)+(4*2)+(3*0)+(2*5)+(1*3)=68
68 % 10 = 8
So 2720-53-8 is a valid CAS Registry Number.

2720-53-8Upstream product

2720-53-8Downstream Products

2720-53-8Relevant articles and documents

Acid labile solution inhibitors and positive- and negative-acting photosensitive composition based thereon

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, (2008/06/13)

Non-polymeric compounds which contain at least one aromatic ring system carrying one or more one or more tetrahydropyranyloxy substituents of formula I STR1 wherein R1 is hydrogen, halogen, alkyl, cycloalkyl, aryl, alkoxy or aryloxy, R2 is hydrogen, alkyl, cycloalkyl or aryl, R3 is a saturated or unsaturated hydrocarbon radical, R4 and R5 are each independently of the other hydrogen, halogen, alkyl, alkoxy or aryloxy, and X is a direct single bond or a methylene or ethylene bridge. These compounds are especially suitable for the preparation of photoresist compositions which can be used both for the production of positive as well as negative images. The photoresists are preferably used for deep-UV microlithography.

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