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1276668-59-7

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1276668-59-7 Usage

Check Digit Verification of cas no

The CAS Registry Mumber 1276668-59-7 includes 10 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 7 digits, 1,2,7,6,6,6 and 8 respectively; the second part has 2 digits, 5 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 1276668-59:
(9*1)+(8*2)+(7*7)+(6*6)+(5*6)+(4*6)+(3*8)+(2*5)+(1*9)=207
207 % 10 = 7
So 1276668-59-7 is a valid CAS Registry Number.

1276668-59-7Relevant articles and documents

NOVEL PROTECTING GROUP FOR SYNTHESIZING RNA AND DERIVATIVE THEREOF

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, (2012/07/30)

A protective group represented by the following general formula (I) (the oxygen atom attached with * represents oxygen atom of 2'-hydroxyl group of a ribonucleoside, a ribonucleotide or a derivative thereof, R1 and R2 both represent hydrogen atom, or represent a halogen atom, a C1-6 alkyl group, or a C1-6 halo-substituted alkyl group; R3 and R4 represent hydrogen atom, a halogen atom, a C1-6 alkyl group, or a C1-6 halo-substituted alkyl group; and R5 and R6 represent a halogen atom, a C1-6 halo-substituted alkyl group, cyano group, nitro group, or the like), which is stable under the reaction conditions of the nucleic acid synthetic cycles and has little steric hindrance, and can be removed under mild conditions using fluoride ions as a base.

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